Enhancement: Add caddy

Follows
* symfony-tools/docs-builder#153

Author: OskarStark

src/Rst/RstParser.php

@@ -101,6 +101,7 @@ class RstParser
     public const CODE_BLOCK_VARNISH_3 = 'varnish3';
     public const CODE_BLOCK_VARNISH_4 = 'varnish4';
     public const CODE_BLOCK_APACHE = 'apache';
+    public const CODE_BLOCK_CADDY = 'caddy';
 
     public static function isPhpDirective(Line $line): bool
     {

tests/Rst/RstParserTest.php

@@ -230,6 +230,7 @@ public static function directiveIsProvider(): \Generator
         yield [true, '.. code-block:: rst', RstParser::DIRECTIVE_CODE_BLOCK];
         yield [true, ' .. code-block:: php', RstParser::DIRECTIVE_CODE_BLOCK];
         yield [true, '.. code-block:: php-annotations', RstParser::DIRECTIVE_CODE_BLOCK];
+        yield [true, '.. code-block:: caddy', RstParser::DIRECTIVE_CODE_BLOCK];
         yield [false, 'foo', RstParser::DIRECTIVE_CODE_BLOCK];
     }
 
@@ -258,6 +259,7 @@ public static function codeBlockDirectiveIsTypeOfProvider(): \Generator
         yield [true, ' .. code-block:: php-standalone', RstParser::CODE_BLOCK_PHP_STANDALONE];
         yield [true, ' .. code-block:: text', RstParser::CODE_BLOCK_TEXT];
         yield [true, ' .. code-block:: rst', RstParser::CODE_BLOCK_RST];
+        yield [true, ' .. code-block:: caddy', RstParser::CODE_BLOCK_CADDY];
         yield [false, 'foo', RstParser::CODE_BLOCK_PHP];
         yield [true, ' .. code-block:: php', RstParser::CODE_BLOCK_PHP, true];
         yield [true, ' .. code-block:: php-annotations', RstParser::CODE_BLOCK_PHP_ANNOTATIONS, false];