fbt: doxygen target (#3510)

* fbt: doxygen target
* github: adjustments for doxygen
* github: always generate docs, only upload for dev
* doxygen: fixed exclusion path for awesome-css
* github: stricter check for push ref
* github: bumped action version to fix node.js deprecation
* github: added PVS report url to workflow summary
* github: pvs: reworked report URL handling
* github: added size report to summary
* docs: added `doxygen` target
* fbt: common naming scheme for COMSTR
* Documentation: fix warnings and errors
* Doxygen: stricter warning checks
* fbt: "doxy" target, opens generated doxygen documentation in browser
* github: doxygen: now using edge (1.10) version

Co-authored-by: あく <alleteam@gmail.com>

scripts/fbt/util.py

@@ -1,5 +1,8 @@
 import os
 import re
+import subprocess
+import sys
+import webbrowser
 
 import SCons
 from SCons.Errors import StopError
@@ -83,3 +86,10 @@ def path_as_posix(path):
     if SCons.Platform.platform_default() == "win32":
         return path.replace(os.path.sep, os.path.altsep)
     return path
+
+
+def open_browser_action(target, source, env):
+    if sys.platform == "darwin":
+        subprocess.run(["open", source[0].abspath])
+    else:
+        webbrowser.open(source[0].abspath)