feat: add vim-fetch plugin for opening files with line numbers

- Configure vim-fetch to load on buffer read/create events
- Enables opening files with syntax like file.txt:123 to jump to line 123

Signed-off-by: Marcelo Borges <[email protected]>

Author: jmarcelomb

lua/plugins/vim-fetch.lua

@@ -0,0 +1,4 @@
+return {
+  "wsdjeg/vim-fetch",
+  event = { "BufReadPre", "BufNewFile" },
+}