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(''))
+

test/handler/test_hurlfmt_handler.vader

@@ -0,0 +1,29 @@
+Before:
+  runtime ale_linters/hurl/hurlfmt.vim
+
+After:
+  call ale#linter#Reset()
+
+Execute(The hurlfmt handler should parse lines correctly):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 11,
+  \     'bufnr': 345,
+  \     'col': 48,
+  \     'end_col': 48,
+  \     'text': 'Parsing space : expecting a space ',
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#hurl#hurlfmt#HandleOutput(345, [
+  \ 'error: Parsing space',
+  \ '--> test.hurl:11:48',
+  \ ' |',
+  \ '8  " | header "Content-Type"= "application/json; charset=utf-8"',
+  \ ' |                      ^ expecting a space',
+  \ ' |',
+  \ ])
+
+Execute(The rubocop handler should handle empty output):
+  AssertEqual [], ale_linters#hurl#hurlfmt#HandleOutput(347, [])

test/linter/test_hurlfmt.vader

@@ -0,0 +1,19 @@
+Before:
+  call ale#assert#SetUpLinterTest('hurl', 'hurlfmt')
+  call ale#test#SetFilename('dummy.hurl')
+
+  let g:ale_ruby_hurlfmt_executable = 'hurlfmt'
+  let g:ale_ruby_hurlfmt_options = ''
+
+After:
+  call ale#assert#TearDownLinterTest()
+
+Execute(Executable should default to hurlfmt):
+  AssertLinter 'hurlfmt', ale#Escape('hurlfmt')
+  \   . ' --check --no-color '
+
+Execute(Should be able to set a custom executable):
+  let g:ale_hurl_hurlfmt_executable = 'bin/hurlfmt'
+
+  AssertLinter 'bin/hurlfmt' , ale#Escape('bin/hurlfmt')
+  \   . ' --check --no-color '