feat(api, shared-data): First pass of dynamic pipetting into liquid classes

[ryanthecoder]

Overview

This PR encompases a first pass implementation of allowing dynamic tracking with liquid classes. As is there is no super convenient way for users to use it, no default selection for any current liquid classes and is defaulted to None everywhere.

But as a first pass this does add a few new features

• TipPosition has split LIQUID_MENISCUS into LIQUID_MENISCUS_START and LIQUID_MENISCUS_END to match the implementation with the standard aspirate and dispense options
• Adds a Schema 2 liquid class which adds aspirate_end_position and dispense_end_position as optional members of the liquid class
• Enables the use of dynamic tracking in liquid classes for the gravimetric protocol which will be part of another PR and the minimal implementation of that is enabled for testing

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 25.19%. Comparing base (141e6cb) to head (19ea952).
⚠️ Report is 1 commits behind head on edge.

Additional details and impacted files

@@             Coverage Diff             @@
##             edge   #20232       +/-   ##
===========================================
- Coverage   56.38%   25.19%   -31.19%     
===========================================
  Files        3623     3623               
  Lines      301011   300971       -40     
  Branches    42246    42196       -50     
===========================================
- Hits       169720    75841    -93879     
- Misses     131065   225114    +94049     
+ Partials      226       16      -210     

Flag	Coverage Δ
protocol-designer	19.24% <ø> (ø)
step-generation	5.56% <ø> (+0.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...n/opentrons_shared_data/liquid_classes/__init__.py	81.81% <ø> (-2.80%)	⬇️
...red_data/liquid_classes/liquid_class_definition.py	95.83% <ø> (-0.07%)	⬇️
...thon/opentrons_shared_data/liquid_classes/types.py	0.00% <ø> (ø)

... and 1808 files with indirect coverage changes

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