refactor(lsp): move glob parsing to util (#26519)

refactor(lsp): move glob parsing to vim.glob

Moving the logic for using vim.lpeg to create a match pattern from a
glob into `vim.glob`. There are several places in the LSP spec that
use globs, and it's very useful to have glob matching as a
generally-available utility.

runtime/lua/vim/_init_packages.lua

@@ -55,6 +55,7 @@ vim._submodules = {
   inspect = true,
   version = true,
   fs = true,
+  glob = true,
   iter = true,
   re = true,
   text = true,