MAJOR: Project rename and preparation for v1.0.0

I hope I haven't missed any for the renames!

lua/outline/code_action.lua

@@ -0,0 +1,14 @@
+local main = require 'outline'
+
+local M = {}
+
+function M.show_code_actions()
+  -- keep the cursor info in outline and jump back (or not jump back?)
+  local winnr, pos = vim.api.nvim_get_current_win(), vim.api.nvim_win_get_cursor(0)
+  main._goto_location(true)
+  vim.lsp.buf.code_action()
+  vim.fn.win_gotoid(winnr)
+  vim.api.nvim_win_set_cursor(winnr, pos)
+end
+
+return M