Remove support for pfr<=0.9.x

[moradology]

This draft aims to move us towards cutting support for the older to_beam recipe version. This ought to simplify developer work and cut down on CI complexity. #144

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (8e8e4be) 96.46% compared to head (626a5d9) 95.93%.
Report is 7 commits behind head on main.

Files	Patch %	Lines
pangeo_forge_runner/commands/bake.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #170      +/-   ##
==========================================
- Coverage   96.46%   95.93%   -0.53%     
==========================================
  Files          15       14       -1     
  Lines         509      492      -17     
==========================================
- Hits          491      472      -19     
- Misses         18       20       +2     

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[ranchodeluxe]

This looks good to me and once in unblocks some good work in:
#171
#166

[moradology]

@cisaacstern It occurs to me you might have an opinion here. I'm for pulling the trigger and moving things forward as i think there are further issues with the ways recipes are handled that will require potential further deprecation or at least heavy guidance on the semantics of the two approaches - PTransform construction vs lazily building our full pipeline inside a function that will serve as the recipe (this is enabled by the PR about lazy pipeline construction #168)

[cisaacstern]

Thanks for the ping I will take a look this afternoon.

[cisaacstern]

Overall LGTM, @moradology, thanks so much for doing this overdue maintenance! One other thing we should remove as part of this PR is:

pangeo-forge-runner/pangeo_forge_runner/storage.py

Lines 110 to 115 in 0eda0ca

	class MetadataCacheStorage(StorageTargetConfig):
	"""
	Storage configuration for caching metadata during recipe baking
	"""
	pangeo_forge_target_class = "MetadataTarget"

Since that is only relevant in pre-0.10.0 releases.

Apart from that, I haven't taken a close look yet as to why codecov is upset, but if possible would be great to get that passing.

[ranchodeluxe]

well, codecov was complaining b/c the number of removals seemed to reduce the overall ratio of coverage, not b/c important things changed. I added some codecov.yml rules that exclude /tests/ and obvious things that the recipes repo excluded and we're gravy 🥳

gonna merge this sucker

[cisaacstern]

Awesome! Thanks all!