Introduced beartype (#3460)

### What problem does this PR solve?

Introduced [beartype](https://github.com/beartype/beartype) for runtime
type-checking.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

api/db/db_models.py

@@ -17,7 +17,6 @@ import logging
 import inspect
 import os
 import sys
-import typing
 import operator
 from enum import Enum
 from functools import wraps
@@ -121,13 +120,13 @@ class SerializedField(LongTextField):
                 f"the serialized type {self._serialized_type} is not supported")
 
 
-def is_continuous_field(cls: typing.Type) -> bool:
+def is_continuous_field(cls: type) -> bool:
     if cls in CONTINUOUS_FIELD_TYPE:
         return True
     for p in cls.__bases__:
         if p in CONTINUOUS_FIELD_TYPE:
             return True
-        elif p != Field and p != object:
+        elif p is not Field and p is not object:
             if is_continuous_field(p):
                 return True
     else:
@@ -159,7 +158,7 @@ class BaseModel(Model):
     def to_dict(self):
         return self.__dict__['__data__']
 
-    def to_human_model_dict(self, only_primary_with: list = None):
+    def to_human_model_dict(self, only_primary_with: list | None = None):
         model_dict = self.__dict__['__data__']
 
         if not only_primary_with:

api/db/db_utils.py

@@ -15,7 +15,6 @@
 #
 import operator
 from functools import reduce
-from typing import Dict, Type, Union
 
 from playhouse.pool import PooledMySQLDatabase
 
@@ -87,7 +86,7 @@ supported_operators = {
 
 
 def query_dict2expression(
-        model: Type[DataBaseModel], query: Dict[str, Union[bool, int, str, list, tuple]]):
+        model: type[DataBaseModel], query: dict[str, bool | int | str | list | tuple]):
     expression = []
 
     for field, value in query.items():
@@ -105,8 +104,8 @@ def query_dict2expression(
     return reduce(operator.iand, expression)
 
 
-def query_db(model: Type[DataBaseModel], limit: int = 0, offset: int = 0,
-             query: dict = None, order_by: Union[str, list, tuple] = None):
+def query_db(model: type[DataBaseModel], limit: int = 0, offset: int = 0,
+             query: dict = None, order_by: str | list | tuple | None = None):
     data = model.select()
     if query:
         data = data.where(query_dict2expression(model, query))