Adds fixer for golines (#3862)

* Adds fixer for golines

* Repositions golines docs to be in alphabetical order

* Fixes golines doc tag

* Fixes formatting for golines docs

autoload/ale/fixers/golines.vim

@@ -0,0 +1,21 @@
+" Author Pig Frown <pigfrown@protonmail.com>
+" Description: Fix Go files long lines with golines"
+
+call ale#Set('go_golines_executable', 'golines')
+
+call ale#Set('go_golines_options', '')
+
+function! ale#fixers#golines#Fix(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'go_golines_executable')
+    let l:options = ale#Var(a:buffer, 'go_golines_options')
+    let l:env = ale#go#EnvString(a:buffer)
+
+    if !executable(l:executable)
+        return 0
+    endif
+
+    return {
+    \   'command': l:env . ale#Escape(l:executable)
+    \       . (empty(l:options) ? '' : ' ' . l:options)
+    \}
+endfunction