[FL-3629] fbt: reworked assets & resources handling (#3160)

* fbt: reworking targets & assets handling WIP
* fbt: dist fixes
* fbt: moved SD card resources to owning apps
* unit_tests: moved resources to app folder
* github: updated unit_tests paths
* github: packaging fixes
* unit_tests: fixes
* fbt: assets: internal cleanup
* fbt: reworked assets handling
* github: unit_tests: reintroducing fixes
* minor cleanup
* fbt: naming changes to reflect private nature of scons tools
* fbt: resources: fixed dist archive paths
* docs: updated paths
* docs: updated more paths
* docs: included "resources" parameter in app manifest docs; updated assets readme
* updated gitignore for assets
* github: updated action versions
* unit_tests: restored timeout; scripts: assets: logging changes
* gh: don't upload desktop animations for unit test run

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

scripts/fbt_tools/fbt_version.py

@@ -2,7 +2,7 @@ from SCons.Action import Action
 from SCons.Builder import Builder
 
 
-def version_emitter(target, source, env):
+def _version_emitter(target, source, env):
     target_dir = target[0]
     target = [
         target_dir.File("version.inc.h"),
@@ -24,7 +24,7 @@ def generate(env):
                     '-o ${TARGET.dir.posix} --dir "${ROOT_DIR}"',
                     "${VERSIONCOMSTR}",
                 ),
-                emitter=version_emitter,
+                emitter=_version_emitter,
             ),
         }
     )