Make server dotfiles generic: single servers/ folder instead of per-host

Consolidated server/<host>/ into one generic servers/ set applied to any
host. Baseline chosen as the superset of the per-host configs:
.zshrc (agnoster + kubectl), identical .vimrc, standard .bashrc, fuller
htoprc, and the shared neofetch config.

install.sh now deploys servers/ unconditionally (no hostname matching);
removed the --host flag. README updated accordingly.

servers/.vimrc

@@ -0,0 +1,67 @@
+set nohlsearch
+set relativenumber
+set nocompatible
+set smartindent
+filetype plugin on
+syntax on
+vmap <C-c> "+yi
+vmap <C-x> "+c
+vmap <C-v> c<ESC>"+p
+imap <C-v> <C-r><C-o>+
+
+let g:NERDTreeWinPos = "left"
+set tabstop=4
+set backspace=indent,eol,start
+
+command WQ wq
+command Wq wq
+command W w
+command Q q
+
+set rtp+=~/.vim/bundle/Vundle.vim
+call vundle#begin()
+    Plugin 'itchyny/lightline.vim'
+    Plugin 'itchyny/vim-gitbranch'
+    Plugin 'VundleVim/Vundle.vim'
+	Plugin 'dracula/vim'
+call vundle#end()
+
+color dracula
+
+""" =====> Lightline
+set laststatus=2
+let g:lightline = {
+\	'colorscheme': 'one',
+\	'active': {
+\		'left': [ 	['mode','paste'],
+\					['gitbranch', 'readonly', 'filename', 'modified']	]
+\	},
+\	'component_function': {
+\		'gitbranch': 'fugitive#head'
+\	},
+\}
+
+let g:lightline = {
+      \ 'colorscheme': 'one',
+      \ 'active': {
+      \   'left': [ ['mode', 'paste'],
+      \             ['fugitive', 'readonly', 'filename', 'modified'] ],
+      \   'right': [ [ 'lineinfo' ], ['percent'] ]
+      \ },
+      \ 'component': {
+      \   'readonly': '%{&filetype=="help"?"":&readonly?"🔒":""}',
+      \   'modified': '%{&filetype=="help"?"":&modified?"+":&modifiable?"":"-"}',
+      \   'fugitive': '%{exists("*fugitive#head")?fugitive#head():""}'
+      \ },
+      \ 'component_visible_condition': {
+      \   'readonly': '(&filetype!="help"&& &readonly)',
+      \   'modified': '(&filetype!="help"&&(&modified||!&modifiable))',
+      \   'fugitive': '(exists("*fugitive#head") && ""!=fugitive#head())'
+      \ },
+      \ 'separator': { 'left': ' ', 'right': ' ' },
+      \ 'subseparator': { 'left': ' ', 'right': ' ' }
+      \ }
+
+if !has('gui_running')
+	set t_Co=256
+endif