Documentation todos

[probberechts]

This issue tracks the remaining todos and cleanup tasks needed to complete the documentation:

---

Pending Documentation Pages

The following pages are planned but still need to be written:

🔎 Querying Data

• user-guide/querying-data/selections/index.md
• user-guide/querying-data/pattern-matching/index.md

🔄 Transforming Data

• user-guide/transformations/coordinates/index.md

📊 Aggregating Data

• user-guide/aggregating-data/index.md

➕ Enriching Data

• user-guide/enriching-data/index.md

---

Event data spec

Complete the spec.yaml file for the following data providers:

• Stats Perform / Opta
• Wyscout (v2)
• Wyscout (v3)
• DataFactory
• Sportec Solutions
• Metrica

First describe which event types are deserialized and how the deserialization is implemented. Next, for each event type, describe which attributes are deserialized and how the deserialization is implemented.

---

UI Issue

• There is some whitespace at the bottom of the homepage. It is a bug in the CSS but I haven't been able to figure out how to get rid of it.

---

Misc

• The highlighted text in the "How kloppy supports your data analysis" section on the page and the README file should link to how-to guides that illustrate it.
• The installation guide page should discuss optional dependencies (pandas, polars, networkx) and how to install them.
• Clean up the "adding a data provider" guide and add instructions for adding a tracking data deserializer.
• Add the list with supported data providers to the home page

[UnravelSports]

Can we add proper documentation on how the TimeContainer(s) are supposed to work too?