[FEATURE] Add listPid to FlexForm of detail plugin (#2619)

Resolves #2612

Configuration/FlexForms/flexform_news_detail.xml

@@ -132,6 +132,24 @@
 							</config>
 					</settings.detailPid>
 
+					<!-- PID List Page -->
+					<settings.listPid>
+							<label>LLL:EXT:news/Resources/Private/Language/locallang_be.xlf:flexforms_additional.listPid</label>
+							<config>
+								<type>group</type>
+								<allowed>pages</allowed>
+								<relationship>manyToOne</relationship>
+								<size>1</size>
+								<maxitems>1</maxitems>
+								<minitems>0</minitems>
+								<suggestOptions>
+									<default>
+										<addWhere>AND pages.doktype NOT in (6,199,254)</addWhere>
+									</default>
+								</suggestOptions>
+							</config>
+					</settings.listPid>
+
 					<!-- PID Back -->
 					<settings.backPid>
 							<label>LLL:EXT:news/Resources/Private/Language/locallang_be.xlf:flexforms_additional.backPid</label>