feat: Revocation checking & POST api/v0/revocations endpoint

[matheus23]

Closing #185

TODO

• Check revocations in authority validation.
• Create revocations when deleting accounts
• Tests for the revocation endpoint

[codecov]

Codecov Report

Merging #201 (74eb0bc) into main (652c373) will increase coverage by 1.89%.
Report is 1 commits behind head on main.
The diff coverage is 32.54%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #201      +/-   ##
==========================================
+ Coverage   18.08%   19.97%   +1.89%     
==========================================
  Files          63       67       +4     
  Lines        2588     2718     +130     
  Branches     1599     1665      +66     
==========================================
+ Hits          468      543      +75     
+ Misses       1492     1465      -27     
- Partials      628      710      +82     

Files	Coverage Δ
fission-core/src/ed_did_key.rs	55.17% <100.00%> (+3.44%)	⬆️
fission-core/src/lib.rs	100.00% <ø> (ø)
fission-server/src/middleware/logging.rs	21.89% <ø> (ø)
fission-server/src/router.rs	16.66% <0.00%> (-0.48%)	⬇️
fission-server/src/error.rs	35.71% <0.00%> (-1.33%)	⬇️
fission-server/src/routes/capability_indexing.rs	26.66% <25.00%> (+1.66%)	⬆️
fission-cli/src/lib.rs	0.00% <0.00%> (ø)
fission-core/src/common.rs	0.00% <0.00%> (ø)
fission-server/src/db/schema.rs	11.11% <20.00%> (+1.11%)	⬆️
fission-server/src/models/capability_indexing.rs	29.54% <50.00%> (+3.93%)	⬆️
... and 7 more

... and 3 files with indirect coverage changes