feat: adds EdDSA support

[NickUfer]

This PR adds support for the EdDSA algorithm and ed25519 curve keys.

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
  confirm that I got green light (please contact
  security@ory.sh) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

[codecov]

Codecov Report

Merging #2782 (025a127) into master (8901b09) will increase coverage by 0.02%.
The diff coverage is 68.96%.

@@            Coverage Diff             @@
##           master    #2782      +/-   ##
==========================================
+ Coverage   50.42%   50.45%   +0.02%     
==========================================
  Files         235      236       +1     
  Lines       14773    14800      +27     
==========================================
+ Hits         7450     7468      +18     
- Misses       6664     6671       +7     
- Partials      659      661       +2     

Impacted Files	Coverage Δ
jwk/helper.go	64.83% <16.66%> (-3.77%)	⬇️
jwk/generator_eddsa.go	80.00% <80.00%> (ø)
cmd/keys_create.go	100.00% <100.00%> (ø)
driver/registry_base.go	89.32% <100.00%> (+0.04%)	⬆️
oauth2/hook.go	64.51% <100.00%> (+0.58%)	⬆️

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[aeneasr]

LGTM - thank you!