Adds E-Expression writing APIs

[popematt]

Issue #, if available:

Description of changes:

This is an API that's safer than just calling the methods on MacroAwareIonWriter directly, and it works with the WriteAsIon interface (ish). It automatically handles expression groups. It allows you to make "prepared" E-Expressions that you can then write later, and it also supports "direct" e-expressions where the macro invocation and arguments are written directly to an IonWriter.

I know there's some junk in this PR, and there are no real tests for it yet. Ignore those parts.

The interesting bits that are worth looking at are WriteAsIon, IonManagedWriter_1_1, and maybe ArgumentBuilder

Maybe I over-designed this... I think i could probably build something workable directly into IonManagedWriter_1_1, or even into the raw writer, since the (binary) raw writer already needs to be aware of the encoding type in order to correctly write tagless arguments. ...yeah, I definitely over-designed this. If there's anything that you think is worth keeping, let me know.

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

[codecov]

Codecov Report

❌ Patch coverage is 20.49689% with 384 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (ion-11-encoding@13607b9). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...n/ion/eexp/ArgumentValidatingIonWriterDecorator.kt	6.61%	126 Missing and 1 partial ⚠️
...main/java/com/amazon/ion/eexp/IonWriterRecorder.kt	0.00%	99 Missing ⚠️
...zon/ion/eexp/checkArgumentEncodingCompatibility.kt	6.12%	44 Missing and 2 partials ⚠️
...zon/ion/eexp/PreparedEExpressionArgumentBuilder.kt	0.00%	44 Missing ⚠️
...mazon/ion/eexp/DirectEExpressionArgumentBuilder.kt	40.00%	26 Missing and 4 partials ⚠️
...in/java/com/amazon/ion/eexp/PreparedEExpression.kt	0.00%	13 Missing ⚠️
...amazon/ion/impl/DefaultReaderToWriterTransfer.java	90.90%	3 Missing and 2 partials ⚠️
.../com/amazon/ion/eexp/EExpressionArgumentBuilder.kt	0.00%	4 Missing ⚠️
.../com/amazon/ion/impl/bin/IonRawBinaryWriter_1_1.kt	0.00%	4 Missing ⚠️
...va/com/amazon/ion/impl/bin/IonManagedWriter_1_1.kt	62.50%	2 Missing and 1 partial ⚠️
... and 5 more

Additional details and impacted files

@@                Coverage Diff                 @@
##             ion-11-encoding    #1087   +/-   ##
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  Coverage                   ?   70.00%           
  Complexity                 ?     7471           
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  Files                      ?      223           
  Lines                      ?    30092           
  Branches                   ?     5412           
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  Hits                       ?    21067           
  Misses                     ?     7349           
  Partials                   ?     1676           

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