[TASK] Add value picker for target field in page record

Make life of editors easier by providing a value picker for
the field 'target' of the page. An editor can now choose
"new window" instead of typing "_blank".

Resolves: #79705
Releases: master, 7.6
Change-Id: I43d0c5add037679ee7c99b6cf16efcd2079353fc
Reviewed-on: https://review.typo3.org/51605


Reviewed-by: Josef Glatz <josef.glatz@typo3.org>
Tested-by: Josef Glatz <josef.glatz@typo3.org>
Tested-by: TYPO3com <no-reply@typo3.com>
Tested-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>

typo3/sysext/core/Configuration/TCA/pages.php

@@ -321,6 +321,11 @@ return [
                 'type' => 'input',
                 'size' => 50,
                 'max' => 80,
+                'valuePicker' => [
+                    'items' => [
+                        [ 'LLL:EXT:frontend/Resources/Private/Language/locallang_ttc.xlf:target.I.1', '_blank' ],
+                    ],
+                ],
                 'eval' => 'trim'
             ]
         ],