vim/c: added vim setup and c language setup

- added vim setup
- added vim autocomplete guide based on coc
- added c support by coc lsp
- added c setup

wiki/programming-languages/c-language.md

@@ -0,0 +1,16 @@
+# C
+
+C is a common programming language.
+
+## Installation
+
+To get c working you basically just need to install a compiler.
+To get a compiler for c there are a few options.
+
+- [GNU compiler collection](gcc.gnu.org)
+
+## IDE
+
+### Vim
+
+The steps to make Vim a c IDE are described in [../linux/vim/c-language.md].