[FL-3174] Dolphin builder in ufbt; minor ufbt/fbt improvements (#2601)

* ufbt: added "dolphin_ext" target (expects "external" subfolder in cwd with dolphin assets); cleaned up unused code
* ufbt: codestyle fixes
* scripts: fixed style according to ruff linter
* scripts: additional cleanup & codestyle fixes
* github: pass target hw code when installing local SDK with ufbt
* ufbt: added error message for missing folder in dolphin builder
* scripts: more linter fixes
* sdk: added flipper_format_stream; ufbt: support for --extra-define
* fbt: reduced amount of global defines
* scripts, fbt: rearranged imports

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

scripts/fbt/sdk/cache.py

@@ -1,20 +1,13 @@
-import operator
-import os
 import csv
 import operator
-
-from enum import Enum, auto
-from typing import Set, ClassVar, Any
+import os
 from dataclasses import dataclass
+from enum import Enum, auto
+from typing import Any, ClassVar, Set
 
 from ansi.color import fg
 
-from . import (
-    ApiEntries,
-    ApiEntryFunction,
-    ApiEntryVariable,
-    ApiHeader,
-)
+from . import ApiEntries, ApiEntryFunction, ApiEntryVariable, ApiHeader
 
 
 @dataclass(frozen=True)
@@ -137,7 +130,7 @@ class SdkCache:
                     f"API version is still WIP: {self.version}. Review the changes and re-run command."
                 )
             )
-            print(f"CSV file entries to mark up:")
+            print("CSV file entries to mark up:")
             print(
                 fg.yellow(
                     "\n".join(