Add did key spec 7 validators

[aljones15]

Addresses: https://github.com/digitalbazaar/did-method-key/issues/46 Also Addresses: https://github.com/digitalbazaar/did-method-key/issues/48

Features:

• Adds most of the validators from the did:key spec to this library
• Removes the previous use of verificationSuite (this is BREAKING)
• Adds the options from the did:key test suite such as publicKeyFormat
• Instead of only allow did keys to resolve to the verificationSuite we now allow did:keys to resolve to the publicKeyFormat
• This changes the way you get Ed25519VerificationKey2018 to the following: driver.get({did, options: {publicKeyFormat: 'Ed25519VerificationKey2018, enableExperimentalPublicKeyTypes: true'}})

To Do:

• [x] Expand test coverage for did:key types
• [x] Throw if publicKeyType: JsonWebKey2020 with a representationNotSupported error (this can be a minor feature in the near future)
• [x] Expand test coverage for driver methods that might be affected by this upgrade
• [x] Resolve any small FIXMES or other delays
• [x] Check the README
• [x] Add instructions to the README for Ed25519VerificationKey2018
• [x] Check the linter
• [x] Check the test project
• [x] Fix node 14 issues in CI
  • [x] Looks like this is due to using a branch in the package.json
• [x] Check the package.json for deprecated/removed packages
• [x] Check the package.json for engine related updates
• [x] Check the package.json for description and other property related issues
• [x] Check for template code
• [x] Check for copy paste code (usually in tests)
• [x] Check for bad naming conventions
• [x] Check for outdated jsdoc comments
• [x] Checkout for outdated comments
• [x] Make issues about concerns not related to the PR
• [x] Link to issues the PR addresses or touches on
• [x] Link to sister PRs involved with this upgrade
• [x] Ensure PR description gives at least 2-3 lines of reason behind the PR
• [x] Spell check PR diff
• [x] Tag most recent editors of code in addition to task giver
• [x] Check CI actions for commits in PR see why they failed

Sister PRs: https://github.com/digitalbazaar/did-io/pull/63 https://github.com/digitalbazaar/bedrock-did-io/pull/14 https://github.com/digitalbazaar/bedrock-did-resolver-http/pull/3

[codecov-commenter]

Codecov Report

Merging #47 (3c84f1d) into main (ca4b973) will decrease coverage by 1.37%. The diff coverage is 93.47%.

:mega: This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@            Coverage Diff             @@
##             main      #47      +/-   ##
==========================================
- Coverage   96.38%   95.01%   -1.37%     
==========================================
  Files           2        4       +2     
  Lines         304      562     +258     
==========================================
+ Hits          293      534     +241     
- Misses         11       28      +17     

Impacted Files	Coverage Δ
lib/validators.js	90.34% <90.34%> (ø)
lib/verificationMethods.js	92.30% <92.30%> (ø)
lib/DidKeyDriver.js	98.00% <100.00%> (+1.87%)	:arrow_up:
lib/index.js	100.00% <100.00%> (ø)

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[dlongley]

This PR is doing too many things at once -- and some of them no longer matter (like node 14 support, etc.) due to concurrent advances elsewhere. We should try and break off the validation pieces into their own separate PR and so on.