Convex MCP server

# Upcoming # 0.6.0 - Update rust nightly version in .rust-toolchain - Remove deprecated set/map support - Add gzip support to connector # 0.5.0 - Emit a TRUNCATE op before the first write to any given table (in case it's a resync) - Skip emitting an initial sync snapshot before the first page. # 0.4.0 - Revert the `_convex_cursor` changes. - Few updates to loglines - docs updates # 0.3.0 - Support a `_convex_cursor` table with a single column `cursor` which holds the `document_deltas` cursor representing the most recent sync. - Add documentation to docs/ # 0.2.0 - Bump `convex` dep to 0.5.0 - Use /test_streaming_export_connection and /get_tables_and_columns endpoints rather than json_schemas json_schemas has stricter requirements around nested schemas than what fivetran requires.