update ClimaCore experiments

[juliasloan25]

Purpose

closes #524

To do

• get tc1 (heat-diffusion-with-slab) running
• clean up tc1 (update comments)
• rm bc-wave-slab, tc2, tc4
• rename remaining test cases
• update environments
  • experiments/ (removed)
  • experiments/ClimaCore/
  • experiments/ClimaCore/heat-diffusion-with-slab (removed)
  • experiments/ClimaCore/sea_breeze
• add remaining test cases to CI
  • heat-diffusion-with-slab
  • sea_breeze
• update experiments/ClimaCore/README

To do in separate PR

see #528

• get atm-ocn-lnd running
  • update CLIMAParameters interface
  • replace LandHydrology package (with ClimaLSM)
• add atm-ocn-lnd to CI

[LenkaNovak]

Thank you @juliasloan25 , looks great! Just a few minor comments. Eventually this should be our entry-level tutorial, so each line should be clear/explained, but we can always do this together during our doc week. Also, it would be good to include the conservation plot in the artifacts on Buildkite. Otherwise, it's good to go. 🚀