[FEATURE] TypoScript: Allow easy comparison against multiple values

Allow easy comparison like:
[globalVar = TSFE:id = 10|12|15]   (in list)
[globalVar = TSFE:id != 10|12|15]  (not in list)

Change-Id: Iae920720ae6058c2cd741f74204c2fbce779e00f
Resolves: #39700
Releases: 6.0
Reviewed-on: http://review.typo3.org/13589
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Ingo Renner
Tested-by: Ingo Renner