Add support for the [djlinter](https://www.djlint.com/) (#4909)

* Add support for the [djlinter](https://www.djlint.com/)

* Add documentation and tests.

* Fix the name of the variable for the executable name.

* Correct the name of the handler in the test.

* Correct the test adding the value of vcol.

* Format djlint.vim according to formatting rules.

doc/ale-html.txt

@@ -33,6 +33,25 @@ cspell                                                        *ale-html-cspell*
 
 See |ale-cspell-options|
 
+===============================================================================
+djlint                                                        *ale-html-djlint*
+
+g:ale_html_djlint_executable                     *g:ale_html_djlint_executable*
+                                                 *b:ale_html_djlint_executable*
+  Type: |String|
+  Default: `'djlint'`
+
+  See |ale-integrations-local-executables|
+
+
+g:ale_html_djlint_options                            *g:ale_html_djlint_options*
+                                                     *b:ale_html_djlint_options*
+  Type: |String|
+  Default: `''`
+
+  This variable can be changed to modify flags given to djlint.
+
+
 ===============================================================================
 fecs                                                            *ale-html-fecs*
 

doc/ale-supported-languages-and-tools.txt

@@ -274,6 +274,7 @@ Notes:
   * `alex`
   * `angular`
   * `cspell`
+  * djlint
   * `eslint`
   * `fecs`
   * `html-beautify`

doc/ale.txt

@@ -3106,6 +3106,7 @@ documented in additional help files.
   html....................................|ale-html-options|
     angular...............................|ale-html-angular|
     cspell................................|ale-html-cspell|
+    djlint................................|ale-html-djlint|
     fecs..................................|ale-html-fecs|
     html-beautify.........................|ale-html-beautify|
     htmlhint..............................|ale-html-htmlhint|