This CL adds new ProcessedFeedback subclasses, corresponding to various IC
types:

* ForIn
* Comparison ops
* Binary/Unary ops
* InstanceOf
* Calls

The feedback is gathered at serialization time and used in several places,
namely:

* Bytecode graph building,
* and its helper class JSTypeHintLowering (with its "early lowering")
* Native context specialization
* JSCallReducer

Design doc: https://docs.google.com/document/d/1JLG0VFV8xmsAIJexU19xzlbNyP51ONqfo_Gf_2DcPC8/edit?usp=sharing

Bug: v8:7790
Change-Id: I53c3d7a17f844384f38c4ee0f0b082c114217a02
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1710663
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63028}