Fix macro parameter cardinality and minor todos

[popematt]

Issue #, if available:

None

Description of changes:

This updates the MacroCompiler to take care of a few "todo" items, support all the *, +, !, and ? cardinality sigils, and remove the [] grouping syntax.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Attention: Patch coverage is 82.92683% with 7 lines in your changes are missing coverage. Please review.

❗ No coverage uploaded for pull request base (ion-11-encoding@4cd5c75). Click here to learn what that means.

Files	Patch %	Lines
src/main/java/com/amazon/ion/impl/macro/Macro.kt	61.53%	1 Missing and 4 partials ⚠️
...in/java/com/amazon/ion/impl/macro/MacroCompiler.kt	92.85%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@                Coverage Diff                 @@
##             ion-11-encoding     #798   +/-   ##
==================================================
  Coverage                   ?   68.43%           
  Complexity                 ?     6040           
==================================================
  Files                      ?      171           
  Lines                      ?    24578           
  Branches                   ?     4426           
==================================================
  Hits                       ?    16820           
  Misses                     ?     6422           
  Partials                   ?     1336           

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