fix: add BBS context to DidDoc

[karimStekelenburg]

BBS context was missing in the DidDocumentBuilder, resulting in some value being dropped during frameing. This PR adds the context.

Signed-off-by: Karim karim@animo.id

[berendsliedrecht]

Not really sure if it is really needed, but some tests might be nice (could be included in the other PR)

[codecov-commenter]

Codecov Report

Merging #789 (1b82c63) into main (1c74618) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #789   +/-   ##
=======================================
  Coverage   87.53%   87.53%           
=======================================
  Files         435      435           
  Lines       10670    10670           
  Branches     1891     1891           
=======================================
  Hits         9340     9340           
  Misses       1268     1268           
  Partials       62       62           

Impacted Files	Coverage Δ
...ges/core/src/modules/dids/domain/keyDidDocument.ts	100.00% <100.00%> (ø)

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