Change from pre-commit to hk and update dev setup instructions

[mdekstrand]

This has some dev environment updates:

• Change from pre-commit to hk
• Update and fix dev container
• Update README.md to reflect current setup
• Add CI job to verify the dev container still works

[codecov]

Codecov Report

❌ Patch coverage is 63.63636% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.55%. Comparing base (c556385) to head (28edce5).

Files with missing lines	Patch %	Lines
src/accel/als/solve.rs	83.33%	1 Missing ⚠️
src/accel/arrow/types/index_list.rs	0.00%	1 Missing ⚠️
src/accel/arrow/types/row.rs	50.00%	1 Missing ⚠️
src/accel/data/index.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1135   +/-   ##
=======================================
  Coverage   89.55%   89.55%           
=======================================
  Files         256      256           
  Lines       17274    17276    +2     
=======================================
+ Hits        15469    15471    +2     
  Misses       1805     1805           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.