Turn numalgos into child module of peer_did module

[Patrik-Stas]

• Turn numalgos to be child model of peer_did. A "numalgo" abstraction doesn't exist outside of peer dids, now this is reflected via the structure itself. It also removes some discrepancy, as we had both src/numalgos and src/peer_did/numalgos

old/new directory structure compared:

I would further suggest to pull everything in src/peer_did a level up, pulling those files to the root. That will make imports in 3rd party pkgs nicer, is it won't duplicate peer_did token in the import path twice.

Additionally

• Merge file did_peer/src/peer_did/regex.rs and did_peer/src/peer_did/validate.rs
• Rename module peer_did_resolver to resolver as the prefix seemed redundant, given we operate in did_peer package
• Renamed GenericPeerDid to AnyPeerDid - this is bit more speculative and shall this change be accepted, we should probably do the same thing with Connection (perhaps AnyStateConnection instead of GenericConnection. I personally don't like the type name to contain "Generic" as it's makes spoken speech more difficult to understand - easy to confuse someone saying "GenericFoobar" as type GenericFoobar or "Generic Foobar", as in terms of generic, the language feature.

[codecov-commenter]

Codecov Report

Merging #1035 (d75475e) into refactor/did_peer (8ed979d) will not change coverage.
The diff coverage is n/a.

@@                Coverage Diff                @@
##           refactor/did_peer   #1035   +/-   ##
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  Coverage               0.05%   0.05%           
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  Files                    383     383           
  Lines                  21288   21288           
  Branches                3837    3837           
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  Hits                      12      12           
  Misses                 21275   21275           
  Partials                   1       1           

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