Tables

[bendsp]

Implement Obsidian-style Markdown tables in Bedrock.

Scope for v1:

• Hybrid mode replaces Markdown pipe tables with a rendered table UI.
• Raw mode continues to show literal Markdown table source.
• Add an Insert table command that inserts a default 3-column table.
• Support direct cell editing in the rendered table.
• Support add/remove row and add/remove column actions from the editor context menu when right-clicking inside a table.
• Disable row removal for the header row and column removal when only one column remains.
• Keep export behavior based on Markdown source.

Out of scope for v1:

• alignment controls
• merge/split cells
• drag resizing
• whole-table deletion affordances
• toolbar buttons
• spreadsheet formulas