Feature/didpeer4

[Patrik-Stas]

Implement did:peer:4 ( see https://identity.foundation/peer-did-method-spec/#method-4-short-form-and-long-form ) as PeerDid<Numalgo4>

APIs:

DidPeer4EncodedDocument

• Comes together with builder DidPeer4EncodedDocumentBuilder. The DidPeer4EncodedDocument is a structure very similar to Did Document, but with small differences. It's a structure which according to spec, you start with in order to construct new did:peer:4. The differences of this structure, in comparison to standard W3C Did Document are specified here: https://identity.foundation/peer-did-method-spec/#creating-a-did

  PeerDid<Numalgo4>::new(encoded_document: DidPeer4EncodedDocument) - Result<Self, DidPeerError>

• given instance of DidPeer4EncodedDocument (see previous point) this function turns it into PeerDid structure.

PeerDid<Numalgo4>::long_form(&self) -> Result<Did, DidPeerError>

• returns long form of peer did

PeerDid<Numalgo4>::short_form(&self) -> Result<Did, DidPeerError>

• returns short form of peer did

PeerDid<Numalgo4>::hash(&self) -> Result<String, DidPeerError>

• returns multibase hash of encoded pseudo-did-document

PeerDid<Numalgo4>::resolve_did_doc(&self) -> Result<DidDocument, DidPeerError>

• resolves instance of did:peer:4 to a Did Document.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 205 lines in your changes are missing coverage. Please review.

Project coverage is 0.05%. Comparing base (8715b95) to head (4923069). Report is 2 commits behind head on main.

Files	Patch %	Lines
...ods/did_peer/src/peer_did/numalgos/numalgo4/mod.rs	0.00%	55 Missing :warning:
...src/peer_did/numalgos/numalgo4/encoded_document.rs	0.00%	39 Missing :warning:
...id_core/did_parser_nom/src/did/parsing/did_core.rs	0.00%	21 Missing :warning:
..._core/did_methods/did_peer/src/peer_did/generic.rs	0.00%	13 Missing :warning:
did_core/did_parser_nom/src/did/parsing/did_sov.rs	0.00%	13 Missing :warning:
..._core/did_parser_nom/src/did/parsing/did_peer_4.rs	0.00%	11 Missing :warning:
did_core/did_methods/did_peer/src/resolver/mod.rs	0.00%	8 Missing :warning:
did_core/did_doc/src/schema/did_doc.rs	0.00%	7 Missing :warning:
...core/did_doc/src/schema/verification_method/mod.rs	0.00%	7 Missing :warning:
aries/aries_vcx_core/src/ledger/type_conversion.rs	0.00%	4 Missing :warning:
... and 13 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1161 +/- ## ======================================== - Coverage 0.05% 0.05% -0.01% ======================================== Files 483 485 +2 Lines 24188 24332 +144 Branches 4473 4511 +38 ======================================== Hits 13 13 - Misses 24175 24319 +144 ``` | [Flag](https://app.codecov.io/gh/hyperledger/aries-vcx/pull/1161/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hyperledger) | Coverage Δ | | |---|---|---| | [unittests-aries-vcx](https://app.codecov.io/gh/hyperledger/aries-vcx/pull/1161/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hyperledger) | `0.05% <0.00%> (-0.01%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hyperledger#carryforward-flags-in-the-pull-request-comment) to find out more.

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