feat(cli): add did:pkh support to the default CLI config

[mirceanis]

What issue is this PR fixing

This adds support for did:pkh to the default CLI config.

> veramo did create
##  choose: did:pkh
> veramo did resolve did:pkh:eip155.....
## resolves a did:pkh

This also cleans some CLI initialization code and inline docs related to config loading.

Quality

Check all that apply:

• I want these changes to be integrated
• I successfully ran pnpm i, pnpm build, pnpm test, pnpm test:browser locally.
• I allow my PR to be updated by the reviewers (to speed up the review process).
• I added unit tests unrelated to did:pkh.
• I added integration tests.
• I did not add relevant automated tests because there is still an incompatibility between the CLI tests and Jest.

[codecov]

Codecov Report

Base: 80.25% // Head: 85.45% // Increases project coverage by +5.20% 🎉

Coverage data is based on head (722a6a1) compared to base (125bf42).
Patch coverage: 83.82% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #1133      +/-   ##
==========================================
+ Coverage   80.25%   85.45%   +5.20%     
==========================================
  Files         118      145      +27     
  Lines        4056    14906   +10850     
  Branches      875     1561     +686     
==========================================
+ Hits         3255    12738    +9483     
- Misses        798     2168    +1370     
+ Partials        3        0       -3     

Impacted Files	Coverage Δ
packages/core-types/src/coreEvents.ts	100.00% <ø> (ø)
...s/credential-ld/src/module-types/jsonld/index.d.ts	0.00% <0.00%> (ø)
packages/data-store-json/src/types.ts	0.00% <0.00%> (ø)
packages/did-comm/src/didcomm.ts	83.26% <ø> (+10.12%)	⬆️
packages/did-comm/src/index.ts	100.00% <ø> (ø)
packages/did-comm/src/message-handler.ts	72.10% <ø> (+12.64%)	⬆️
.../protocols/coordinate-mediation-message-handler.ts	89.63% <ø> (ø)
packages/did-comm/src/protocols/index.ts	100.00% <ø> (ø)
...omm/src/protocols/messagepickup-message-handler.ts	91.25% <ø> (ø)
.../did-comm/src/protocols/routing-message-handler.ts	89.65% <ø> (ø)
... and 209 more

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