ci(test_apps): limit dependencies for misc test_apps

Only pull in direct dependencies for the test apps, reducing build time
as well making it possible for CI to determine if the test should run or not
when dependencies are changed.

components/touch_element/test_apps/CMakeLists.txt

@@ -1,5 +1,7 @@
 # This is the project CMakeLists.txt file for the test subproject
 cmake_minimum_required(VERSION 3.16)
 
+set(COMPONENTS main)
+
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 project(touch_element_test)

components/touch_element/test_apps/main/CMakeLists.txt

@@ -1,4 +1,5 @@
 idf_component_register(SRCS "test_app_main.c" "test_touch_element.c" "test_touch_button.c"
                             "test_touch_slider.c" "test_touch_matrix.c"
+                       PRIV_REQUIRES unity touch_element
                        WHOLE_ARCHIVE
 )