Token parser

[kristinapathak]

Moving logic from ancla into the acquirer:
https://github.com/xmidt-org/ancla/blob/0e77127fee33c2a6239dec1d06c77de98b46ca7c/jwtAcquireParser.go

Also added a default keys update interval value.

[codecov]

Codecov Report

Merging #110 (7c705ec) into main (72ba2cf) will decrease coverage by 0.42%.
The diff coverage is 60.00%.

❗ Current head 7c705ec differs from pull request most recent head 2313ba8. Consider uploading reports for the commit 2313ba8 to get more accurate results

@@            Coverage Diff             @@
##             main     #110      +/-   ##
==========================================
- Coverage   81.81%   81.39%   -0.43%     
==========================================
  Files          43       44       +1     
  Lines        1144     1161      +17     
==========================================
+ Hits          936      945       +9     
- Misses        185      189       +4     
- Partials       23       27       +4     

Impacted Files	Coverage Δ
acquire/bearer.go	90.24% <ø> (+2.48%)	⬆️
key/resolverFactory.go	73.46% <0.00%> (-3.13%)	⬇️
acquire/parsers.go	65.21% <65.21%> (ø)

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[guardrails]

⚠️ We detected 1 security issue in this pull request:

Insecure Authentication (1)

Docs	Details
💡	Title: JWT decode without verification, Severity: Medium bascule/acquire/parsers.go Line 67 in 2313ba8 token, _, err := p.ParseUnverified(string(data), jwt.MapClaims{})

More info on how to fix Insecure Authentication in Go.

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

80.0% Coverage
0.0% Duplication