Align with Commonalities r4.2

[XunliYang]

Problem description

Align with the fix in Commonalities r4.2:

• Clarification on string `maxLength' value by @rartych in Clarification on string `maxLength' Commonalities#620
• Added implicit-subscription API template by @hdamker in feat: add implicit-subscription API template Commonalities#612
• x-camara-commonalities to use full version string by @hdamker in fix: x-camara-commonalities to use full version string Commonalities#599