Add autogenerated docs for types and methods

docs/api/methods/leave_chat.md

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+# leaveChat
+
+## Description
+
+Use this method for your bot to leave a group, supergroup or channel. Returns True on success.
+
+
+## Arguments
+
+| Name | Type | Description |
+| - | - | - |
+| `chat_id` | `#!python3 Union[int, str]` | Unique identifier for the target chat or username of the target supergroup or channel (in the format @channelusername) |
+
+
+
+## Response
+
+Type: `#!python3 bool`
+
+Description: Returns True on success.
+
+
+## Usage
+
+
+### As bot method bot
+
+```python3
+result: bool = await bot.leave_chat(...)
+```
+
+### Method as object
+
+Imports:
+
+- `from aiogram.types import LeaveChat`
+- `from aiogram.api.types import LeaveChat`
+- `from aiogram.api.types.leave_chat import LeaveChat`
+
+#### As reply into Webhook
+```python3
+return LeaveChat(...)
+```
+
+#### With specific bot
+```python3
+result: bool = await bot.emit(LeaveChat(...))
+```
+
+#### In handlers with current bot
+```python3
+result: bool = await LeaveChat(...)
+```
+
+
+## Related pages:
+
+- [Official documentation](https://core.telegram.org/bots/api#leavechat)