feat(api): provide labware schema 3 definitions if possible

[caila-marashaj]

Overview

Now that we have labware schema 3 merged, let's provide labware schema 3 definitions when they're available, and otherwise default to schema 2 like before.

Changelog

• In _get_path_to_labware, see if a folder matching the labware's name exists, and if not return the definition in the schema 2 folder
• adjust get_all_labware_definitions to stay pointed at the schema 2 folder because I'm unsure where that gets used

Review Requests

Let me know if this might break anything unexpected

[SyntaxColoring]

Now That's What I Call Labware (Volume 3)

Just remove that # here comment, and LGTM.

That, plus some nonessential suggestions:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.43%. Comparing base (58a7d19) to head (dde895a).
Report is 81 commits behind head on edge.

Additional details and impacted files

@@             Coverage Diff             @@
##             edge   #16148       +/-   ##
===========================================
+ Coverage   63.31%   92.43%   +29.12%     
===========================================
  Files         300       77      -223     
  Lines       15773     1283    -14490     
===========================================
- Hits         9986     1186     -8800     
+ Misses       5787       97     -5690     

Flag	Coverage Δ
g-code-testing	92.43% <ø> (ø)
hardware	?
shared-data	?
system-server	?
update-server	?
usb-bridge	?

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see 223 files with indirect coverage changes