Add support for Telegram Bot API 9.1 (#1704)

* Add support for Telegram Bot API 9.1 features, including checklists, gifts, and new methods like `SendChecklist`, `EditMessageChecklist`, and `GetMyStarBalance`. Update changelog and improve `True` field descriptions.

* Bump API Version

* Refactor profile photo types to use `InputProfilePhotoType` enums instead of hardcoded literals

* Refactor imports and clean up redundant code across methods, types, and webhook server classes

docs/api/methods/send_checklist.rst

@@ -0,0 +1,45 @@
+#############
+sendChecklist
+#############
+
+Returns: :obj:`Message`
+
+.. automodule:: aiogram.methods.send_checklist
+    :members:
+    :member-order: bysource
+    :undoc-members: True
+    :exclude-members: model_config,model_fields
+
+
+Usage
+=====
+
+As bot method
+-------------
+
+.. code-block::
+
+    result: Message = await bot.send_checklist(...)
+
+
+Method as object
+----------------
+
+Imports:
+
+- :code:`from aiogram.methods.send_checklist import SendChecklist`
+- alias: :code:`from aiogram.methods import SendChecklist`
+
+With specific bot
+~~~~~~~~~~~~~~~~~
+
+.. code-block:: python
+
+    result: Message = await bot(SendChecklist(...))
+
+As reply into Webhook in handler
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: python
+
+    return SendChecklist(...)