Added full support of Bot API 7.6 (#1533)

* Added full support of Bot API 7.6

* Fixed imports

* fix tests (#1534)

* Fixed coverage

* Override InputPaidMedia media type to `str | InputFile`

* Added shortcut

* Fixed PaidMediaType enum

* Added changelog

---------

Co-authored-by: Oleg A <t0rr@mail.ru>

docs/api/methods/send_paid_media.rst

@@ -0,0 +1,51 @@
+#############
+sendPaidMedia
+#############
+
+Returns: :obj:`Message`
+
+.. automodule:: aiogram.methods.send_paid_media
+    :members:
+    :member-order: bysource
+    :undoc-members: True
+    :exclude-members: model_config,model_fields
+
+
+Usage
+=====
+
+As bot method
+-------------
+
+.. code-block::
+
+    result: Message = await bot.send_paid_media(...)
+
+
+Method as object
+----------------
+
+Imports:
+
+- :code:`from aiogram.methods.send_paid_media import SendPaidMedia`
+- alias: :code:`from aiogram.methods import SendPaidMedia`
+
+With specific bot
+~~~~~~~~~~~~~~~~~
+
+.. code-block:: python
+
+    result: Message = await bot(SendPaidMedia(...))
+
+As reply into Webhook in handler
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: python
+
+    return SendPaidMedia(...)
+
+
+As shortcut from received object
+--------------------------------
+
+- :meth:`aiogram.types.message.Message.answer_paid_media`