Add 1D Column Examples for Hydrostatic Balance and Ekman Layer

Hello, 
following up on the idea I previously shared in the issue, I've added documentation [docs/src/examples.md](https://github.com/CliMA/ClimaCore.jl/blob/main/docs/src/examples.md) for the two 1D column examples: the hydrostatic balance and the Ekman layer. 

Please let me know if this contribution aligns with your goals for the documentation or if any revisions are needed. I'd be happy to make changes!

Author: Snowdog85123