use poetry-dynamic-versioning, update workflows to consolidate steps

[ITProKyle]

Summary

Use the poetry-dynamic-versioning plugin to automatically set package version.
This plugin automates the use of Dunamai (what is currently used).

What Changed

Added

• added runway.__version_tuple__ set by poetry-dynamic-versioning

Changed

• pipx is now used instead of pip when installing poetry on the devcontainer image
  • poetry-dynamic-versioning is injected into the same venv as poetry
• standardized the names of workflow steps and added some emoji
• replaced the use of actions/setup-python, Gr1N/setup-poetry, and a few script steps with finleyfamily/action-setup-python
  • this is a composite action that combines setting up python, installing poetry, installing poetry plugins, installing dependencies (including caching), etc
• consolidated actions run for pull_request_target into a single workflow
• runway.__version__ is no longer determined at runtime. it is set by poetry-dynamic-versioning when building a release
• default value of runway_version is now None instead of >=1.10
  • this is needed for tests to pass as __version__ is statically set to 0.0.0 outside of the build & publish workflow

Removed

• removed version target from Makefile as it is no longer needed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.15%. Comparing base (593b2be) to head (5a33618).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2488      +/-   ##
==========================================
+ Coverage   90.13%   90.15%   +0.01%     
==========================================
  Files         247      247              
  Lines       15610    15610              
==========================================
+ Hits        14070    14073       +3     
+ Misses       1540     1537       -3     

Files	Coverage Δ
runway/__init__.py	100.00% <100.00%> (+25.00%)	⬆️
runway/config/models/runway/__init__.py	100.00% <ø> (ø)

... and 2 files with indirect coverage changes

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[alexander-kogan]

LGTM