Consider splitting up SQLEditorNav (780 lines, complexity 229)

# Chore ## Describe the chore Ran ArchSetu (a static analysis tool I built) against Supabase. `SQLEditorNav()` in `apps/studio/components/layouts/SQLEditorLayout/SQLEditorNavV2/SQLEditorNav.tsx:50` is 780 lines long with a cyclomatic complexity of 229, making it one of the largest single components in the Studio codebase. Given how central the SQL editor is to the product, it's probably worth splitting into smaller pieces before it grows further. ## Additional context Full report with everything else ArchSetu flagged: https://www.archsetu.com/r/supabase/supabase Best, Vishal