Integrate taxonomy with semantic enumerations

[paul121]

This PR integrates framework taxonomy terms into the schemas using semantic enumerations.

This works by using a simple python script to populate a new taxonomy.yaml schema file with enum values from the curated list of taxonomy terms. This was easy to do since Linkml provides a python API for interacting with schemas, SchemaView. I also considered manipulating the taxonomy.yaml file more manually but got this working so didn't explore that any further.

I added simple activity, impact and environmentType slots to the Project class just so these terms get pulled into the documentation in a meaningful way... I imagine we might want to reference these enums via different or even multiple slots? I left some related comments in #8

[paul121]

Here is the EnvironmentTypeTypes enum documentation: https://semantic-enumerations.regen-data-standards.pages.dev/schema/EnvironmentTypeTypes

Unfortunately, it looks like the meaning URIs aren't being expanded and rendered here. If they were, you could quickly navigate over to a taxonomy term's page. I imagine this might be a simple contribution to add to the linkml doc generator.

[cloudflare-workers-and-pages]

Deploying regen-data-standards with    Cloudflare Pages

Latest commit:	9c18c53
Status:	✅  Deploy successful!
Preview URL:	https://dda8b5c1.regen-data-standards.pages.dev
Branch Preview URL:	https://semantic-enumerations.regen-data-standards.pages.dev

View logs

[paul121]

I've rebased this on main and added a few follow up commits to make this consistent with changes since I first opened this PR