Fix 4740 - add hurlfmt linter (#4741)

* Fix 4740 - add hurlfmt linter

* Fix 4740 - add hurlfmt fixer

* Fix wrong comments

* Add end_col to qflist

* Fix test

test/fixers/test_hurlfmt_fixer_callback.vader

@@ -0,0 +1,23 @@
+Before:
+  Save g:ale_hurl_hurlfmt_executable
+
+  " Use an invalid global executable, so we don't match it.
+  let g:ale_hurl_hurlfmt_executable = 'xxxinvalid'
+
+  call ale#test#SetDirectory('/testplugin/test/fixers')
+
+After:
+  Restore
+
+  call ale#test#RestoreDirectory()
+
+Execute(The hurlfmt callback should return the correct default values):
+  call ale#test#SetFilename('../test-files/hurl/dummy.hurl')
+
+  AssertEqual
+  \ {
+  \   'command': ale#Escape(g:ale_hurl_hurlfmt_executable)
+  \     . ' --out hurl',
+  \ },
+  \ ale#fixers#hurlfmt#Fix(bufnr(''))
+