Add more builtin extensions

[lambdalisue]

Curator (Source + Matcher)

• Ripgrep
• git grep
• grep

Source

• General
  • File
  • Line
  • List
• Vim
  • buffer
  • window
  • tabpage
  • quickfix
  • loclist
  • oldfiles
  • grep
  • vimgrep
  • colorscheme
  • highlight
  • helptag
  • jumplist
  • register
  • mark
  • command
  • history (command, search)
  • mapping

Modifier

• relative path

Filter

• cwd filter
• exists filter

Matcher

• fzf
• substring
• regexp

Sorter

• lexical sort
• numerical sorter

Renderer

• nerdfont
• smart path
• smart grep
• helptag
• File info (file size, permission, etc.)
• Buffer info (modified, buffer listed, etc.)

Previewer

• buffer
• file
• helptag
• shell command

Action

• Vim
  • echo
  • open
  • quickfix
  • location list
  • cd/lcd/tcd
  • cmd
  • help
  • function call
  • yank
  • write buffers (modified buffer)
  • unload/delete/wipe buffers
• Others
  • system open
  • submatch

[lambdalisue]

Continues on vim-fall/deno-fall-std#2