fix: inspectdb not match data type 'DOUBLE' and 'CHAR' for MySQL

* increase:
1. Inspectdb adds DECIMAL, DOUBLE, CHAR, TIME data type matching;
2. Add exception handling, avoid the need to manually create the entire table because a certain data type is not supported.

* fix: aerich inspectdb raise KeyError for double in MySQL

* feat: support command `python -m aerich`

* docs: update changelog

* tests: verify mysql inspectdb for float field

* fix mysql uuid field inspect to be charfield

* refactor: use `db_index=True` instead of `index=True` for inspectdb

* docs: update changelog

---------

Co-authored-by: xiechen <xiechen@jinse.com>
Co-authored-by: Waket Zheng <waketzheng@gmail.com>

tests/test_fake.py

@@ -2,41 +2,9 @@ from __future__ import annotations
 
 import os
 import re
-import sys
 from pathlib import Path
 
-import pytest
-
-from aerich.ddl.sqlite import SqliteDDL
-from aerich.migrate import Migrate
-from tests._utils import chdir, copy_files, run_shell
-
-
-@pytest.fixture
-def new_aerich_project(tmp_path: Path):
-    test_dir = Path(__file__).parent
-    asset_dir = test_dir / "assets" / "fake"
-    settings_py = asset_dir / "settings.py"
-    _tests_py = asset_dir / "_tests.py"
-    db_py = asset_dir / "db.py"
-    models_py = test_dir / "models.py"
-    models_second_py = test_dir / "models_second.py"
-    copy_files(settings_py, _tests_py, models_py, models_second_py, db_py, target_dir=tmp_path)
-    dst_dir = tmp_path / "tests"
-    dst_dir.mkdir()
-    dst_dir.joinpath("__init__.py").touch()
-    copy_files(test_dir / "_utils.py", test_dir / "indexes.py", target_dir=dst_dir)
-    if should_remove := str(tmp_path) not in sys.path:
-        sys.path.append(str(tmp_path))
-    with chdir(tmp_path):
-        run_shell("python db.py create", capture_output=False)
-        try:
-            yield
-        finally:
-            if not os.getenv("AERICH_DONT_DROP_FAKE_DB"):
-                run_shell("python db.py drop", capture_output=False)
-            if should_remove:
-                sys.path.remove(str(tmp_path))
+from tests._utils import Dialect, run_shell
 
 
 def _append_field(*files: str, name="field_1") -> None:
@@ -48,7 +16,7 @@ def _append_field(*files: str, name="field_1") -> None:
 
 
 def test_fake(new_aerich_project):
-    if (ddl := getattr(Migrate, "ddl", None)) and isinstance(ddl, SqliteDDL):
+    if Dialect.is_sqlite():
         # TODO: go ahead if sqlite alter-column supported
         return
     output = run_shell("aerich init -t settings.TORTOISE_ORM")