golang: added guide to install and setup go in vim

wiki/linux/vim/golang.md

@@ -0,0 +1,41 @@
+# GoLang in Vim
+
+GoLang is a common programming language.
+In this entry we will focus on making vim support Go and use vim as an ide for it.
+This guide is based on a guide from [octetz.com](https://octetz.com/docs/2019/2019-04-24-vim-as-a-go-ide/).
+
+## Build, Test, Run, Docs, Debug, Format
+
+To enable most of the basic functions of an IDE you need to install `vim-go` via
+`vim plug`.
+For this add `Plug 'fatih/vim-go' " better support for golang` in your plug section
+in the `init.vim` file.
+Then run `:PlugInstall` and `:GoInstallBinaries` inside `nvim`.
+Finally add `let g:go_def_mapping_enabled = 0` to your `init.vim` to make sure
+the mapping `gd` will be used by `coc` and its language server.
+
+## Autocompletion
+
+### Coc
+
+To enable autocompletion for [coc](coc.md) you need to install `ccls`.
+After that you need to add the following lines to your coc config file.
+
+```json
+{
+   "languageserver": {
+        "golang": {
+            "command": "gopls",
+            "rootPatterns": [
+                "go.mod",
+                ".vim/",
+                ".git/",
+                ".hg/"
+            ],
+            "filetypes": [
+                "go"
+            ]
+        }
+   }
+}
+```