Device product pages

[naltatis]

fixes https://github.com/evcc-io/docs/issues/755 fixes https://github.com/evcc-io/docs/issues/632

• 🍱 add device overview pages (product tile style)
• 📄 dedicated page for each product
• ✏️ edit button links to source template (core)
• 🕸️ improve crawlability (algolia page length limit)

Todos:

• [x] hide products in sidebar (performance) but keep indexable (seo)
• [x] detail: add property table https://github.com/evcc-io/evcc/pull/21670
• [ ] detail: handle modbus property variations
• [ ] detail: add product image
• [ ] improve feature layout (1p3p, ...)
• [ ] list: add feature filter
• [ ] alternative solution for tariffs (no icons)
• [x] data: add products to vehicle templates (Tesla Model 3, Kia EV6, ...) -> icons
• [ ] add general sections for "user-defined devices"
• [ ] handle special groups (switch socket, heater, ...)

[naltatis]

\cc @gimpelginster

[naltatis]