ref: typehints, enum instead of raw string, abc and other (#1)

Full code coverage with annotations, fixing errors in various linters: ruff, wps, etc. Fixing errors in type checkers: ty, mypy, pyright. Formatting and bringing code to a consistent style, applying best practices in various aspects.

src/argenta/metrics/main.py

@@ -2,7 +2,7 @@ import io
 from contextlib import redirect_stdout
 from time import time
 
-from argenta.app import App
+from argenta import App
 
 
 def get_time_of_pre_cycle_setup(app: App) -> float:
@@ -13,6 +13,6 @@ def get_time_of_pre_cycle_setup(app: App) -> float:
     """
     start = time()
     with redirect_stdout(io.StringIO()):
-        app.pre_cycle_setup()
+        app._pre_cycle_setup() # pyright: ignore[reportPrivateUsage]
     end = time()
     return end - start