[BUG] Revive gempy x le connection GEN-10870

[Leguark]

Description

This PR makes several dependency and functionality updates:

1. Added dotenv.load_dotenv() to the 3D visualization tutorial to properly load environment variables
2. Added make_new_space=False parameter to the model upload function in the tutorial
3. Replaced the git dependency for subsurface with the PyPI package subsurface-terra in dev-requirements
4. Added liquid-earth-sdk and wellpathpy to the docs requirements

Relates to dependency management and tutorial improvements

Checklist

• My code uses type hinting for function and method arguments and return values.
• I have created tests which cover my code.
• The test code either 1. demonstrates at least one valuable use case (e.g. integration tests)
  or 2. verifies that outputs are as expected for given inputs (e.g. unit tests).
• New tests pass locally with my changes.

[Leguark]

• [BUG] Revive gempy x le connection GEN-10870 #1008 👈 (View in Graphite)
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[Leguark]

Merge activity

• May 7, 12:47 PM EDT: A user started a stack merge that includes this pull request via Graphite.
• May 7, 12:49 PM EDT: Graphite couldn't merge this PR because it failed for an unknown reason.