Restrict character sets for attribute values

[Magnus-Kuhn]

Readiness checklist

• I added/updated tests.
• I ensured that the PR title is good enough for the changelog.
• I labeled the PR.
• I self-reviewed the PR.

Notes

When adding documentation, note that only NFC normalized strings are considered valid.

[codecov]

Codecov Report

Attention: Patch coverage is 97.39583% with 5 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ntent/src/attributes/types/relationship/Consent.ts	33.33%	4 Missing ⚠️
...ontent/src/attributes/types/strings/AbstractXML.ts	0.00%	1 Missing ⚠️

Files with missing lines	Coverage Δ
...es/content/src/attributes/RelationshipAttribute.ts	96.82% <100.00%> (+0.05%)	⬆️
...ntent/src/attributes/RelationshipAttributeQuery.ts	98.26% <100.00%> (+0.01%)	⬆️
...attributes/ThirdPartyRelationshipAttributeQuery.ts	97.14% <100.00%> (-2.86%)	⬇️
.../content/src/attributes/constants/CharacterSets.ts	100.00% <100.00%> (ø)
...ackages/content/src/attributes/hints/ValueHints.ts	98.10% <100.00%> (-0.56%)	⬇️
...es/content/src/attributes/hints/ValueHintsValue.ts	100.00% <100.00%> (+8.10%)	⬆️
...ges/content/src/attributes/types/AbstractString.ts	100.00% <100.00%> (ø)
...nt/src/attributes/types/address/AbstractAddress.ts	100.00% <100.00%> (ø)
...kages/content/src/attributes/types/address/City.ts	87.50% <100.00%> (+0.83%)	⬆️
...src/attributes/types/address/DeliveryBoxAddress.ts	85.48% <100.00%> (+11.50%)	⬆️
... and 33 more

... and 3 files with indirect coverage changes

[Magnus-Kuhn]

@stnmtz, could you have a look at the datatype assignments to the attribute types?

[jkoenig134]

@Magnus-Kuhn as this is a breaking change please

1. put it back to draft
2. re-add wip

until we are ready to merge.

[Milena-Czierlinski]

Requires additional approval of @stnmtz once we want to merge this PR.