deprecate crate in-favor of libsql

[LucioFranco]

❯ cargo check
warning: use of deprecated struct `libsql_client::SyncClient`: this crate has been deprecated, please use the `libsql` crate instead
 --> src/main.rs:3:20
  |
3 |     libsql_client::SyncClient::from_env();
  |                    ^^^^^^^^^^
  |
  = note: `#[warn(deprecated)]` on by default

warning: use of deprecated associated function `libsql_client::SyncClient::from_env`: this crate has been deprecated, please use the `libsql` crate instead
 --> src/main.rs:3:32
  |
3 |     libsql_client::SyncClient::from_env();