Add a failing test to guide 2.0 fixes.

[dmitrizagidulin]

Adding a failing test to help guide the various 2.0 fixes (https://github.com/digitalbazaar/cborld/issues/14 etc)

[codecov-io]

Codecov Report

Merging #16 into main will increase coverage by 31.63%. The diff coverage is 100.00%.

@@             Coverage Diff             @@
##             main      #16       +/-   ##
===========================================
+ Coverage   26.63%   58.26%   +31.63%     
===========================================
  Files          16       16               
  Lines         368      369        +1     
===========================================
+ Hits           98      215      +117     
+ Misses        270      154      -116     

Impacted Files	Coverage Δ
lib/context.js	75.00% <100.00%> (+55.64%)	:arrow_up:
lib/codecs/UrlCodec.js	36.36% <0.00%> (+12.12%)	:arrow_up:
lib/encode.js	52.27% <0.00%> (+22.72%)	:arrow_up:
lib/decode.js	67.24% <0.00%> (+31.03%)	:arrow_up:
lib/codecs/MultibaseCodec.js	40.00% <0.00%> (+40.00%)	:arrow_up:
lib/codecs/ContextCodec.js	78.78% <0.00%> (+57.57%)	:arrow_up:
lib/codec.js	80.70% <0.00%> (+61.40%)	:arrow_up:
lib/codecs/SimpleTypeCodec.js	100.00% <0.00%> (+100.00%)	:arrow_up:

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[dmitrizagidulin]

@JSAssassin - looks great, thank you!

One change request - can you rename ageOver to overAge (this initial PR was added before we did the rename everywhere); you may need to update the corresponding cborldBytes array in the test.

[dmitrizagidulin]

@JSAssassin - thanks! 👍 from me on this PR.