feat: add support for tables in Tiptap editor

[dcshzj]

Problem

We need to be able to add tables within the Tiptap editor.

Solution

Breaking Changes

• Yes - this PR contains breaking changes
• No - this PR is backwards compatible

Features:

• Add table support to the Tiptap editor
  • We have an extra caption attribute that Tiptap's base table extension does not support, so it is done by extending the base extension with the additional attribute.
  • A modal was added to allow configuring this attribute.
  • The table header cell only supports paragraphs, so the base extension was also modified (previously could take block+).
• Added icons used for table-related editing. These icons were taken from the classic CMS with the exact same functionality.
• Also disallowed any type of marks inside headings

Screenshots

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
isomer-studio	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 31, 2024 6:52am

[karrui]

lgtm