Modernize CMake code (ongoing refactoring) (#4507)

* Reformat CMake code

* Bump minimum CMake version to 3.12

* Add target sources separately via `target_source()`

* Make `tr_win32_app_info()` add target sources on its own

* Don't use `include_directories()`

* Don't use `add_definitions()`

* Limit use of `add_compile_options()`

* Move VDKQueue target declaration to a subdirectory

* Add `tr_disable_source_files_compile()` helper

* Add `tr_target_glib_resources()` helper

* Add `tr_gettext_msgfmt()` helper

* Enable AUTOUIC for Qt client

* Enable AUTORCC for Qt client

* Remove AUTO{MOC,RCC,UIC} source group overrides

* Add `tr_target_idl_files()` helper

* Move source group setup to `tr_qt_add_translation()`

* Add `tr_target_xib_files()` helper

* Prefer `target_sources()` to intermediate variables

* Use explicit visibility versions of `target_*()` commands

* Prefer genexes to conditions in `target_*()` commands

* Add `tr_allow_compile_if()` helper

* Leave only top-level `project()`, remove the rest

* Minor fixups

* Fixup Mac QL plugin install

* Fixup IDE target folders and source groups

cmake/FindPSL.cmake

@@ -8,12 +8,16 @@ if(PSL_PREFER_STATIC_LIB)
 endif()
 
 if(UNIX)
-  find_package(PkgConfig QUIET)
-  pkg_check_modules(_PSL QUIET libpsl)
+    find_package(PkgConfig QUIET)
+    pkg_check_modules(_PSL QUIET libpsl)
 endif()
 
-find_path(PSL_INCLUDE_DIR NAMES libpsl.h HINTS ${_PSL_INCLUDEDIR})
-find_library(PSL_LIBRARY NAMES psl HINTS ${_PSL_LIBDIR})
+find_path(PSL_INCLUDE_DIR
+    NAMES libpsl.h
+    HINTS ${_PSL_INCLUDEDIR})
+find_library(PSL_LIBRARY
+    NAMES psl
+    HINTS ${_PSL_LIBDIR})
 
 set(PSL_INCLUDE_DIRS ${PSL_INCLUDE_DIR})
 set(PSL_LIBRARIES ${PSL_LIBRARY})
@@ -23,8 +27,7 @@ include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args(PSL
     REQUIRED_VARS
         PSL_LIBRARY
-        PSL_INCLUDE_DIR
-)
+        PSL_INCLUDE_DIR)
 
 mark_as_advanced(PSL_INCLUDE_DIR PSL_LIBRARY)