docs: cargo features (#3527)

* dialog

* fs

* geolocation

* haptic

* log

* single instance

* notification

* updater

* ##

* persisted scopes

* stronghold

* sql

* upload

* websocket

* http
(this one was too long that I generated through codex, didn't review yet)

* add change file

* no persisted-scope-js

* add `://`

* Merge branch 'v2' into document-cargo-features

* update system-proxy docs

* finish http docs

* notification doesn't need version bumps

* clean up docs

plugins/sql/src/lib.rs

@@ -2,7 +2,16 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-License-Identifier: MIT
 
-//! Interface with SQL databases through [sqlx](https://github.com/launchbadge/sqlx). It supports the `sqlite`, `mysql` and `postgres` drivers, enabled by a Cargo feature.
+//! Interface with SQL databases through [sqlx](https://github.com/launchbadge/sqlx).
+//!
+//! ## Cargo features
+//!
+//! No database driver is enabled by default. Enable at least one driver;
+//! multiple drivers may be enabled together.
+//!
+//! - **sqlite**: Adds support for SQLite.
+//! - **mysql**: Adds support for MySQL.
+//! - **postgres**: Adds support for PostgreSQL.
 
 #![doc(
     html_logo_url = "https://github.com/tauri-apps/tauri/raw/dev/app-icon.png",