Move unasync.py to scripts (#891)

Co-authored-by: Tester <Tester@test.com>
Co-authored-by: Kar Petrosyan <92274156+karpetrosyan@users.noreply.github.com>

Author: 3 people

scripts/check

@@ -11,4 +11,4 @@ set -x
 ${PREFIX}ruff check --show-source $SOURCE_FILES
 ${PREFIX}ruff format $SOURCE_FILES --diff
 ${PREFIX}mypy $SOURCE_FILES
-scripts/unasync --check
+${PREFIX}python scripts/unasync.py --check

scripts/lint

@@ -13,4 +13,4 @@ ${PREFIX}ruff format $SOURCE_FILES
 
 # Run unasync last because its `--check` mode is not aware of code formatters.
 # (This means sync code isn't prettified, and that's mostly okay.)
-scripts/unasync
+${PREFIX}python scripts/unasync.py