add vim syntax files for config files

README.md

@@ -339,3 +339,11 @@ Only then you could also set up git to ignore specific formatting revisions:
 ```bash
 git config blame.ignoreRevsFile formatting-revs.txt
 ```
+
+(Neo)Vim Syntax Highlighting for config files
+----------------------------------------
+Copy the file detection and syntax files to your vim config folder, in the case of neovim:
+
+```bash
+cp -R other/vim/* ~/.config/nvim/
+```

other/vim/ftdetect/ddnet-cfg.vim

@@ -0,0 +1 @@
+autocmd BufRead,BufNewFile settings_ddnet.cfg set filetype=ddnet-cfg

other/vim/syntax/ddnet-cfg.vim

@@ -0,0 +1,25 @@
+" Vim syntax file
+" Language: ddnet config files (https://github.com/ddnet/ddnet)
+
+if exists("b:current_syntax")
+  finish
+endif
+
+syntax match settingName "^\w*"
+
+syntax match value "\s\w*"
+syntax match escapeQuote  "\\\"" 
+syntax match number  "\s[0-9]\+"
+syntax match ip  "\s\d\+\.\d\+\.\d\+\.\d\+\(:\d\+\)\="
+
+syntax region string start='"' end='"' contains=escapeQuote
+
+hi def link settingName Identifier
+
+hi def link value Constant
+hi def link ip Constant
+hi def link string String
+hi def link number Number
+hi def link escapeQuote SpecialChar
+
+let b:current_syntax = "ddnet-cfg"