Release 11.0.0 as stable

[EchoEllet]

A few things that are holding releasing 11.0.0 as stable:

• Fixing Add paste options (bool plainTextOnly and a callback to view/modify a delta prior to pasting) #2350 and Feat: support for customize paste function #2156.
• Fixing Header Selection Dropdown opens under keyboard and is not visible #1697.
• Merging revert!: magnifier #2413, addressing revert!: magnifier #2413 (comment).
• Optional: Bundle this setup with the AndroidManifest.xml of quill_native_bridge so users don't need this manual setup anymore (similarly to image_picker), it needs more consideration since it will always bundle this to their AndroidManifest.xml.

Those must be done to avoid introducing breaking changes shortly after 11.0.0.