Add CMake option to en/disable Python support

Signed-off-by: Juraj Oravec <jurajoravec@mailo.com>

CMakeLists.txt

@@ -132,6 +132,8 @@ if (KF5Wallet_FOUND AND KF5KIO_FOUND AND KF5Crash_FOUND AND KF5CoreAddons_FOUND
 endif()
 
 # Optional: PySide2
+option(BUILD_PYTHON_SUPPORT "Support for Python plugins" ON)
+if (BUILD_PYTHON_SUPPORT)
     find_package(PySide2 "2.0.0")
     find_package(Shiboken2 "2.0.0")
     find_package(Python3 COMPONENTS Development)
@@ -141,6 +143,7 @@ set_package_properties(Python3 PROPERTIES DESCRIPTION "Python plugins" TYPE OPTI
     if (PySide2_FOUND AND Shiboken2_FOUND AND Python3_FOUND)
         set(ENABLE_PYTHON_PLUGINS TRUE)
     endif()
+endif()
 
 find_package(Intl)
 if (Intl_FOUND)