Add binary codec support for MPT amounts and STHash192

[nkramer44]

Part one of MPT support.

Adds support for MPT amounts in AmountType, as well as support for STHash192

[codecov]

Codecov Report

Attention: Patch coverage is 97.03947% with 9 lines in your changes missing coverage. Please review.

Project coverage is 92.26%. Comparing base (10a6e2a) to head (79a9729).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...a/org/xrpl/xrpl4j/model/transactions/Wrappers.java	66.66%	3 Missing ⚠️
...org/xrpl/xrpl4j/codec/binary/types/AmountType.java	95.74%	0 Missing and 2 partials ⚠️
...xrpl/xrpl4j/codec/binary/types/SerializedType.java	66.66%	2 Missing ⚠️
...xrpl4j/model/flags/MpTokenIssuanceCreateFlags.java	97.43%	0 Missing and 1 partial ⚠️
...xrpl/xrpl4j/model/transactions/CurrencyAmount.java	83.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #556      +/-   ##
============================================
+ Coverage     92.02%   92.26%   +0.23%     
- Complexity     1849     1968     +119     
============================================
  Files           383      408      +25     
  Lines          5128     5401     +273     
  Branches        436      459      +23     
============================================
+ Hits           4719     4983     +264     
- Misses          273      279       +6     
- Partials        136      139       +3     

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[sappenin]

LGTM!