chore(cmake): add export compile commands

By default enabled.
Useful for IDE supporting this.

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

cmake/templates/easy_cmake.cmake

@@ -18,6 +18,7 @@ set(BOARDNAME "{{boardname or "@board_name_here@"}}")
 
 list(APPEND CMAKE_MODULE_PATH {{"${CORE_PATH}"}}/cmake)
 set(CMAKE_TOOLCHAIN_FILE toolchain)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 
 # This block can be removed when using this file as the sketch's CMakeLists.txt