Rename the childabuse schema to CSAM

[Maximilian-Staab]

This PR changes the name of the old childabuse schema the accepted industry standard Child Sexual Abuse Material (CSAM).

One additional subtype has been added to reflect link aggregators or link sharing platforms as well.

[linear[bot]]

DAT-2150 Add CSAM to XARF

Problem to solve

In November/December a member of the community would like to advise hotline advisors to be able to report Child sexual abuse material in XARF. More about this is available in slack in the following link:

https://abusix.slack.com/archives/C032W00CNCD/p1693943216776409

[codecov[bot]]

Codecov Report

Merging #60 (74685ba) into master (e62c9a0) will decrease coverage by 0.01%. Report is 1 commits behind head on master. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #60      +/-   ##
==========================================
- Coverage   69.63%   69.62%   -0.01%     
==========================================
  Files           1        1              
  Lines       45321    45342      +21     
==========================================
+ Hits        31559    31570      +11     
- Misses      13762    13772      +10     

see 1 file with indirect coverage changes