Update installation instructions

[sfmig]

Is your feature request related to a problem? Please describe.
We can install from pip now but the current instructions don't reflect it, so it would be nice to update them. It would be nice to follow movement's lead and add uv installation instructions too.

Describe the solution you'd like
Ideally, we would follow movement's layout and format as much as possible. Note that we don't publish ethology in conda yet, so we should only cover these two cases:

• conda+pip installation
• uv installation

We should update the "Update the package" section too.

Describe alternatives you've considered
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Additional context
movement currently does not mention uv sync, which as far as I understand it would be equivalent to creating a virtual environment and running pip install -e .. If this is confirmed, it would be nice to add maybe an admonition/note to mention the uv sync command. The pip-like command will be easier to remember for people coming from pip/conda, but seems nice to also mention uv sync as it is less verbose.

[Tushar7012]

Hi @sfmig

This PR addresses all the points from issue #132:

Changes made:

• Added tabbed sections for conda and uv virtual environment creation
• Added tabbed sections for pip and uv package installation
• Included uv sync / uv add ethology as a tip admonition for users managing projects with uv
• Updated the "Update the package" section with pip and uv tabs
• Updated the environment removal instructions for both conda and uv
• Matched the layout and format style from movement's installation docs

The docs now cover the two main installation paths (conda+pip and uv) while keeping the structure clean and easy to follow.

Please let me know if any changes are needed!