PII redactions - use same algorithms as in feedback tool

[lisafast]

@HamzaAburaneh recommends we implement PII redaction algorithms from feedback tool to replace crappy regex currently in src/services/RedactionService.js - files it uses are in services/redactions.

I think Name redaction is still very imperfect? Hamza also said he plans to update the badwords list. I've been adding to manipulation.

Note that PII is currently redacted and replaced with XXX but still sent to AI.
Badwords and manipulation are redacted and replaced with ### and are NOT sent to the AI.

Link to algorithm:
https://github.com/alpha-canada-ca/feedback-viewer/blob/master/src/main/java/ca/gc/tbs/service/ContentService.java

Future issue when this is done - instead of sending redacted PII to the AI service, we should instead offer people the chance to change it - just like how feedback now works. Because if I look at the feedback questions with PII redactions, many become useless once PII is gone. Hamza knows all the details of this.

[lisafast]

@HamzaAburaneh I think you can close this issue?