v1.4.0: feat(options): add comfortable zero cmdheight

Style

• README: Fix markdown styling

Refactor

• Miscellaneous cleanups
• Treesitter: Remove sql parser
• Plugins: Remove vim-protobuf in favour of ts
• Plugins: Remove impatient plugin
• Gitsigns: Define keymaps only once
• Plugins: Replace vim-exchange with substitute

Chore

• Add MIT license (Close #2)

Feature

• Options: Add comfortable zero cmdheight
• Lsp: Add rust_analyzer
• Plugins: Add ray-x/go.nvim plugin
• Treesitter: Enable matchup
• Vifm: Add vifm syntax and ftplugin

Misc

• Startup performance improvements