feat: live_grep and grep_string function for additional opts (allow file mask) (#1017)

lua/telescope/builtin/init.lua

@@ -70,6 +70,7 @@ local builtin = {}
 ---@param opts table: options to pass to the picker
 ---@field grep_open_files boolean: if true, restrict search to open files only, mutually exclusive with `search_dirs`
 ---@field search_dirs table: directory/directories to search in, mutually exclusive with `grep_open_files`
+---@field additional_args function: function(opts) which returns a table of additional arguments to be passed on
 builtin.live_grep = require("telescope.builtin.files").live_grep
 
 --- Searches for the string under your cursor in your current working directory
@@ -77,6 +78,7 @@ builtin.live_grep = require("telescope.builtin.files").live_grep
 ---@field search string: the query to search
 ---@field search_dirs table: directory/directories to search in
 ---@field use_regex boolean: if true, special characters won't be escaped, allows for using regex (default is false)
+---@field additional_args function: function(opts) which returns a table of additional arguments to be passed on
 builtin.grep_string = require("telescope.builtin.files").grep_string
 
 --- Lists files in your current working directory, respects .gitignore