[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>

site_scons/extapps.scons

@@ -14,7 +14,6 @@ appenv = ENV["APPENV"] = ENV.Clone(
         "fbt_assets",
         "fbt_sdk",
     ],
-    RESOURCES_ROOT=ENV.Dir("#/assets/resources"),
 )
 
 appenv.Replace(
@@ -56,7 +55,6 @@ appenv.AppendUnique(
 @dataclass
 class FlipperExtAppBuildArtifacts:
     application_map: dict = field(default_factory=dict)
-    resources_dist: NodeList = field(default_factory=NodeList)
     sdk_tree: NodeList = field(default_factory=NodeList)
 
 
@@ -78,8 +76,6 @@ Alias(
     list(app_artifact.validator for app_artifact in extapps.application_map.values()),
 )
 
-extapps.resources_dist = appenv.FapDist(appenv["RESOURCES_ROOT"], [])
-
 
 if appsrc := appenv.subst("$APPSRC"):
     launch_target = appenv.AddAppLaunchTarget(appsrc, "launch")