Refactor the CI scripts (#6191)

The reason behind this refactoring is that all of the sketch related functions can (and will) be used for other purposes.

Build in the sketch directory: This will make it easy to handle artifacts after the build.
Separate sketch related functions from IDE installation script. This is the main commit.
Create a separate job for the Cmake check. This check was part of one of the Linux build. I believe that it's not the best place for such a check.
Checking for the skip landmarks and validity of the the sketch directory were already done by count_sketches.

.github/scripts/install-arduino-ide.sh

@@ -34,9 +34,6 @@ else
 fi
 export OS_NAME
 
-ARDUINO_BUILD_DIR="$HOME/.arduino/build.tmp"
-ARDUINO_CACHE_DIR="$HOME/.arduino/cache.tmp"
-
 if [ "$OS_IS_MACOS" == "1" ]; then
     export ARDUINO_IDE_PATH="/Applications/Arduino.app/Contents/Java"
     export ARDUINO_USR_PATH="$HOME/Documents/Arduino"
@@ -81,156 +78,3 @@ if [ ! -d "$ARDUINO_IDE_PATH" ]; then
     echo ""
 fi
 
-function build_sketch(){ # build_sketch <fqbn> <path-to-ino> [extra-options]
-    if [ "$#" -lt 2 ]; then
-        echo "ERROR: Illegal number of parameters"
-        echo "USAGE: build_sketch <fqbn> <path-to-ino> [extra-options]"
-        return 1
-    fi
-
-    local fqbn="$1"
-    local sketch="$2"
-    local xtra_opts="$3"
-    local win_opts=""
-    if [ "$OS_IS_WINDOWS" == "1" ]; then
-        local ctags_version=`ls "$ARDUINO_IDE_PATH/tools-builder/ctags/"`
-        local preprocessor_version=`ls "$ARDUINO_IDE_PATH/tools-builder/arduino-preprocessor/"`
-        win_opts="-prefs=runtime.tools.ctags.path=$ARDUINO_IDE_PATH/tools-builder/ctags/$ctags_version -prefs=runtime.tools.arduino-preprocessor.path=$ARDUINO_IDE_PATH/tools-builder/arduino-preprocessor/$preprocessor_version"
-    fi
-
-    #echo ""
-    #echo "Compiling '"$(basename "$sketch")"' ..."
-    mkdir -p "$ARDUINO_BUILD_DIR"
-    mkdir -p "$ARDUINO_CACHE_DIR"
-    $ARDUINO_IDE_PATH/arduino-builder -compile -logger=human -core-api-version=10810 \
-        -fqbn=$fqbn \
-        -warnings="all" \
-        -tools "$ARDUINO_IDE_PATH/tools-builder" \
-        -tools "$ARDUINO_IDE_PATH/tools" \
-        -built-in-libraries "$ARDUINO_IDE_PATH/libraries" \
-        -hardware "$ARDUINO_IDE_PATH/hardware" \
-        -hardware "$ARDUINO_USR_PATH/hardware" \
-        -libraries "$ARDUINO_USR_PATH/libraries" \
-        -build-cache "$ARDUINO_CACHE_DIR" \
-        -build-path "$ARDUINO_BUILD_DIR" \
-        $win_opts $xtra_opts "$sketch"
-}
-
-function count_sketches(){ # count_sketches <examples-path> <target-mcu>
-    local examples="$1"
-    local target="$2"
-    rm -rf sketches.txt
-    if [ ! -d "$examples" ]; then
-        touch sketches.txt
-        return 0
-    fi
-    local sketches=$(find $examples -name *.ino)
-    local sketchnum=0
-    for sketch in $sketches; do
-        local sketchdir=$(dirname $sketch)
-        local sketchdirname=$(basename $sketchdir)
-        local sketchname=$(basename $sketch)
-        if [[ "$sketchdirname.ino" != "$sketchname" ]]; then
-            continue
-        elif [[ -f "$sketchdir/.skip.$target" ]]; then
-            continue
-        else
-            echo $sketch >> sketches.txt
-            sketchnum=$(($sketchnum + 1))
-        fi
-    done
-    return $sketchnum
-}
-
-function build_sketches(){ # build_sketches <fqbn> <target-mcu> <examples-path> <chunk> <total-chunks> [extra-options]
-    local fqbn=$1
-    local target="$2"
-    local examples=$3
-    local chunk_idex=$4
-    local chunks_num=$5
-    local xtra_opts=$6
-
-    if [ "$#" -lt 3 ]; then
-        echo "ERROR: Illegal number of parameters"
-        echo "USAGE: build_sketches <fqbn> <target-mcu <examples-path> [<chunk> <total-chunks>] [extra-options]"
-        return 1
-    fi
-
-    if [ "$#" -lt 5 ]; then
-        chunk_idex="0"
-        chunks_num="1"
-        xtra_opts=$4
-    fi
-
-    if [ "$chunks_num" -le 0 ]; then
-        echo "ERROR: Chunks count must be positive number"
-        return 1
-    fi
-    if [ "$chunk_idex" -ge "$chunks_num" ] && [ "$chunks_num" -ge 2 ]; then
-        echo "ERROR: Chunk index must be less than chunks count"
-        return 1
-    fi
-
-    set +e
-    count_sketches "$examples" "$target"
-    local sketchcount=$?
-    set -e
-    local sketches=$(cat sketches.txt)
-    rm -rf sketches.txt
-
-    local chunk_size=$(( $sketchcount / $chunks_num ))
-    local all_chunks=$(( $chunks_num * $chunk_size ))
-    if [ "$all_chunks" -lt "$sketchcount" ]; then
-        chunk_size=$(( $chunk_size + 1 ))
-    fi
-
-    local start_index=0
-    local end_index=0
-    if [ "$chunk_idex" -ge "$chunks_num" ]; then
-        start_index=$chunk_idex
-        end_index=$sketchcount
-    else
-        start_index=$(( $chunk_idex * $chunk_size ))
-        if [ "$sketchcount" -le "$start_index" ]; then
-            echo "Skipping job"
-            return 0
-        fi
-
-        end_index=$(( $(( $chunk_idex + 1 )) * $chunk_size ))
-        if [ "$end_index" -gt "$sketchcount" ]; then
-            end_index=$sketchcount
-        fi
-    fi
-
-    local start_num=$(( $start_index + 1 ))
-    echo "Found $sketchcount Sketches for target '$target'";
-    echo "Chunk Index : $chunk_idex"
-    echo "Chunk Count : $chunks_num"
-    echo "Chunk Size  : $chunk_size"
-    echo "Start Sketch: $start_num"
-    echo "End Sketch  : $end_index"
-
-    local sketchnum=0
-    for sketch in $sketches; do
-        local sketchdir=$(dirname $sketch)
-        local sketchdirname=$(basename $sketchdir)
-        local sketchname=$(basename $sketch)
-        if [ "${sketchdirname}.ino" != "$sketchname" ] \
-        || [ -f "$sketchdir/.skip.$target" ]; then
-            continue
-        fi
-        sketchnum=$(($sketchnum + 1))
-        if [ "$sketchnum" -le "$start_index" ] \
-        || [ "$sketchnum" -gt "$end_index" ]; then
-            continue
-        fi
-        echo ""
-        echo "Building Sketch Index $(($sketchnum - 1)) - $sketchdirname"
-        build_sketch "$fqbn" "$sketch" "$xtra_opts"
-        local result=$?
-        if [ $result -ne 0 ]; then
-            return $result
-        fi
-    done
-    return 0
-}