[FL-3080] fbt: PVS support (#2286)

* fbt: added firmware_pvscheck & firmware_pvs targets for *nix
* fbt: pvs support on Windows
* fbt: additional fixes & docs for PVS support
* fbt: fixes for updater env configuration
* github: reworked pvs workflow
* vscode: added PVS shortcut
* pvs: added --ignore-ccache flag
* fbt: pvs: opening web browser if there are warnings
* fbt: pvs: added browser handler for mac
* github: fixed report path for PVS
* fbt: pvs: fixed report upload path
* removed intentional PVS warning
* fixed more PVS warnings
* fixed secplus_v1 PVS warning
* fbt: added PVSNOBROWSER flag
* github: setting PVSNOBROWSER for pvs runs
* fbt: less debug output

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

scripts/fbt_tools/fbt_help.py

@@ -31,6 +31,8 @@ Other:
         run linters
     format, format_py:
         run code formatters
+    firmware_pvs:
+        generate a PVS-Studio report
 
 For more targets & info, see documentation/fbt.md
 """