chore(config): vim: split config, tweaks

Signed-off-by: Ismo Vuorinen <ismo@ivuorinen.net>

config/vim/after/ui.vim

@@ -0,0 +1,34 @@
+" GUI settings
+if has("gui_running")
+  if has("gui_mac") || has("gui_macvim")
+    set macligatures
+    set guifont=JetBrains\ Mono:h14
+    set transparency=7
+  endif
+else
+  let g:CSApprox_loaded = 1
+
+  " IndentLine
+  let g:indentLine_enabled = 1
+  let g:indentLine_concealcursor = ''
+  let g:indentLine_char = '┆'
+  let g:indentLine_faster = 1
+
+  if $COLORTERM == 'gnome-terminal'
+    set term=gnome-256color
+  else
+    if $TERM == 'xterm'
+      set term=xterm-256color
+    endif
+  endif
+endif
+
+" if terminal supports 256 colors, disable t_ut
+if &term =~ '256color'
+  set t_ut=
+endif
+
+" set the title of the terminal to the file name
+set title
+set titleold="Terminal"
+set titlestring=%F