Hope the sqlx support the bundled-sqlcipher-vendored-openssl for sqlx-sqlite

**Is your feature request related to a problem? Please describe.**
No.

**Describe the solution you'd like**
I want the sqlx-sqlite support the feature of "bundled-sqlcipher-vendored-openssl" like https://github.com/rusqlite/rusqlite/blob/master/libsqlite3-sys/Cargo.toml#L19

**Describe alternatives you've considered**
No

**Additional context**
No