Related to refactoring in !1512, after which ID vectors can only be set with the correct number of IDs.

- converts static arrays to vectors for subpicture related parameters
- improved encoder parameter checking
- mode automatic calculation of subpicture ID length at encoder
- update theoretical limit of maximum number of subpictures

In this case, return type of getPicWidthInCtu() (uint8_t) overflow.

- initialize slice map from subpicture map
- encoder support for inferring slice map from subpicture map
- improve software manual

fixes for layerId setting in the scaled reference pictures, setting of PPS id, and RPL construction with ILRP