Vim Configuration updates

- Add more configs to make VIM a lot more like an IDE.
- Removed unnecessary configs.
- Collapsed some settings together.
- Split configs to facilitate NVIM migration.
- Added spell files to git.
- Added .swp VIM files to gitignore.
- Configured NVIM to pick VIM selected configurations.

common/.vim/spell/en.utf-8.add

@@ -0,0 +1,9 @@
+Bhubaneswar
+Kolkata
+Holi
+Rakhi
+Subrat
+Ghosh
+Tussar
+Patra
+Ctrl