convert widget code guide to a sample

[aarongranick-okta]

[codecov-commenter]

Codecov Report

Merging #876 (484d6c0) into master (b7dea6e) will increase coverage by 0.11%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #876      +/-   ##
==========================================
+ Coverage   91.41%   91.52%   +0.11%     
==========================================
  Files         116      116              
  Lines        3354     3471     +117     
  Branches      695      738      +43     
==========================================
+ Hits         3066     3177     +111     
- Misses        288      294       +6     

Impacted Files	Coverage Δ
lib/oidc/verifyToken.ts	100.00% <0.00%> (ø)
lib/AuthStateManager.ts	93.54% <0.00%> (+0.07%)	:arrow_up:
lib/TokenManager.ts	94.57% <0.00%> (+0.18%)	:arrow_up:
lib/oidc/util/refreshToken.ts	83.33% <0.00%> (+2.38%)	:arrow_up:

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