vim(snippets): Simplify lua inspect-debugging snippet i

Use `utils.debug_utils` lib instead of putting all the code and logic
in the snippet itself.

Author: wookayin

vim/UltiSnips/lua.snippets

@@ -30,14 +30,8 @@ endsnippet
 snippet p
 print(vim.inspect(${1}))
 endsnippet
-snippet i  "vim.notify + vim.inspect"
-`!p
-has_def = any([l.strip().startswith('local _inspect = function') for l in snip.buffer[:-1]])
-if not has_def:
-	snip.rv = "require 'notify'.setup { level = 'DEBUG' }  -- XXX DEBUG"
-	snip += "local _inspect = function(x, ...) return vim.notify(vim.inspect(x), vim.log.levels.DEBUG, { title = vim.split(debug.traceback(), '\\n')[3] }) end;"
-	snip += ""
-`_inspect($1)
+snippet i  "vim.notify + vim.inspect for debugging"
+require('utils.debug_utils').inspect({ ["$1"] = ${1:obj}$0 })
 endsnippet
 snippet inspect
 vim.inspect(${1})