fix: Change to verification object

[richtera]

What kind of change does this PR introduce (bug fix, feature, docs update, ...)?

Change from verificationData/Function or hash/hashFunction to verification object.
Fix chai assert and debug jests.
Repair getVerificationMethod (getVerificationFunction) that said it would match signature or name
but only matched on signature.

What is the current behaviour (you can also link to an open issue here)?

The current values were recently changed from hash/hashFunction to verificationData/verificationFunction
but we also want a source property. Therefore this changes it to an object containing
{ method, source?, data }?

What is the new behaviour (if this is a feature change)?

All jests pass so it should not introduce functionality changes other than the property values.

Other information:

https://github.com/lukso-network/LIPs/blob/main/LSPs/LSP-3-Profile-Metadata.md

[codecov-commenter]

Codecov Report

Merging #343 (e7302e4) into develop (c3d84c1) will decrease coverage by 0.36%.
The diff coverage is 77.41%.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

@@             Coverage Diff             @@
##           develop     #343      +/-   ##
===========================================
- Coverage    83.71%   83.36%   -0.36%     
===========================================
  Files           18       18              
  Lines         1130     1136       +6     
  Branches       255      259       +4     
===========================================
+ Hits           946      947       +1     
- Misses          98      100       +2     
- Partials        86       89       +3     

Files	Coverage Δ
src/constants/constants.ts	100.00% <100.00%> (ø)
src/lib/getDataFromExternalSources.ts	61.29% <33.33%> (-2.05%)	⬇️
src/lib/utils.ts	82.09% <81.81%> (-1.03%)	⬇️
src/lib/encoder.ts	83.39% <76.92%> (-0.57%)	⬇️

[CallumGrindle]

thank you for these changes @richtera 🙏