fbt: reproducible manifest builds & improvements (#1801)

* fbt: reproducible manifest builds, less rebuild on small updates; scripts: assets: using timestamp from commandline af available
* fbt: added app import validation for launch_app & single app build targets
* fbt: COMSTR for app imports validation
* docs: minor fixes
* docs: markdown fix
* vscode: comments for RTOS startup

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

site_scons/fbt/appmanifest.py

@@ -38,7 +38,7 @@ class FlipperApplication:
     sdk_headers: List[str] = field(default_factory=list)
     # .fap-specific
     sources: List[str] = field(default_factory=lambda: ["*.c*"])
-    fap_version: Tuple[int] = field(default_factory=lambda: (0, 0))
+    fap_version: Tuple[int] = field(default_factory=lambda: (0, 1))
     fap_icon: Optional[str] = None
     fap_libs: List[str] = field(default_factory=list)
     fap_category: str = ""

site_scons/fbt/version.py

@@ -3,6 +3,11 @@ import datetime
 from functools import cache
 
 
+@cache
+def get_git_commit_unix_timestamp():
+    return int(subprocess.check_output(["git", "show", "-s", "--format=%ct"]))
+
+
 @cache
 def get_fast_git_version_id():
     try: