[doc] Added Vim general and formating detailed setup documentation

Change-Id: I35fcc3937634200ba0eae0560b3ac55ee63e47a7
[core]   Updated wildignore list
[core]   Unified encoding and fileformat configuration
[plugin] Added Tagbar config for Verilog
[plugin] Added Vim-flavored-plugin plugin and configuration

Change-Id: I4a8e82940150da17756faf06800867cbab33c252