Added order:time support to post searching

TODO

@@ -25,7 +25,6 @@ everything related to posts:
             - special:disliked
             - special:fav
         - search order
-            - order:time
             - order:comment_count
             - order:comment_time
             - order:file_size

src/SearchServices/Filters/PostFilter.php

@@ -8,6 +8,7 @@ class PostFilter extends BasicFilter implements IFilter
 	const ORDER_FAV_COUNT = 'favCount';
 	const ORDER_TAG_COUNT = 'tagCount';
 	const ORDER_SCORE = 'score';
+	const ORDER_LAST_EDIT_TIME = 'lastEditTime';
 
 	const REQUIREMENT_TAG = 'tag';
 	const REQUIREMENT_ID = 'id';

src/SearchServices/Parsers/PostSearchParser.php

@@ -46,6 +46,9 @@ class PostSearchParser extends AbstractSearchParser
 		elseif ($token === 'tag_count')
 			return \Szurubooru\SearchServices\Filters\PostFilter::ORDER_TAG_COUNT;
 
+		elseif ($token === 'time')
+			return \Szurubooru\SearchServices\Filters\PostFilter::ORDER_LAST_EDIT_TIME;
+
 		elseif ($token === 'score')
 			return \Szurubooru\SearchServices\Filters\PostFilter::ORDER_SCORE;