Add AMM data to book_changes

[tequdev]

High Level Overview of Change

Add AMM data to book_changes, which currently parses only Offer data.

Context of Change

#4952

Type of Change

• [x ] New feature (non-breaking change which adds functionality)

API Impact

• [x ] Public API: New feature (new methods and/or new fields)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 84 lines in your changes are missing coverage. Please review.

Project coverage is 76.91%. Comparing base (c88166e) to head (4ef3f7b).

Files	Patch %	Lines
src/ripple/rpc/BookChanges.h	0.00%	68 Missing and 16 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4992      +/-   ##
===========================================
- Coverage    76.97%   76.91%   -0.06%     
===========================================
  Files         1129     1129              
  Lines       131914   131997      +83     
  Branches     39629    39637       +8     
===========================================
- Hits        101539   101529      -10     
- Misses       24459    24484      +25     
- Partials      5916     5984      +68     

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