tools: add install.ps1, export.ps1

Closes IDF-855

export.ps1

@@ -0,0 +1,62 @@
+if ($env:MSYSTEM -ne $null) {
+    Write-Output "This .ps1 file is for Windows Powershell only. When using MSYS, run:`n. ./export.sh."
+    exit 1
+}
+
+
+$IDF_PATH = $PSScriptRoot
+
+Write-Output "Setting IDF_PATH: $IDF_PATH"
+$env:IDF_PATH=$IDF_PATH
+
+Write-Output "Adding ESP-IDF tools to PATH..."
+$OLD_PATH=$env:Path.split(";") | Select-Object -Unique # array without duplicates
+# using idf_tools.py to get $envars_array to set
+$envars_raw = python.exe $IDF_PATH\tools\idf_tools.py export --format key-value
+if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE } # if error
+
+$envars_array # will be filled like: 
+#               [
+#                    [vname1, vval1], [vname2, vval2], ...
+#               ]
+foreach ($line  in $envars_raw)
+{
+    $pair = $line.split("=") # split in name, val
+    $var_name = $pair[0].Trim() # trim spaces on the ends of the name
+    $var_val = $pair[1].Trim() # trim spaces on the ends of the val
+    $var_val = $var_val -replace "%(.+)%", "`$env:`$1" # convert var syntax to PS using RegEx
+    $var_val = $ExecutionContext.InvokeCommand.ExpandString($var_val) # expand variables to values
+    $envars_array+=(,($var_name, $var_val))
+}
+
+foreach ($pair  in $envars_array) # setting the values
+{
+    $var_name = $pair[0].Trim() # trim spaces on the ends of the name
+    $var_val = $pair[1].Trim() # trim spaces on the ends of the val
+    Set-Item -Path "Env:$var_name" -Value "$var_val" 
+}
+
+#Compare Path's OLD vs. NEW
+$NEW_PATH = $env:Path.split(";") | Select-Object -Unique # array without duplicates
+$dif_Path = Compare-Object -ReferenceObject $OLD_PATH -DifferenceObject $NEW_PATH -PassThru
+if ($dif_Path -ne $null)
+{
+    Write-Output $dif_Path
+}
+else {
+    Write-Output "No directories added to PATH:"
+    Write-Output $OLD_PATH
+}
+
+
+Write-Output "Checking if Python packages are up to date..."
+
+Start-Process -Wait -NoNewWindow -FilePath "python" -Args "$IDF_PATH/tools/check_python_dependencies.py"
+if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE } # if error
+
+Write-Output "
+Done! You can now compile ESP-IDF projects.
+Go to the project directory and run:
+    idf.py build
+
+"