chore: rename bca->bda & externalize bda-types

Cargo.lock

Cargo.toml

bca/types/Cargo.toml

bca/types/src/amount.rs

bca/types/src/identity.rs

bca/types/src/lib.rs

bca/types/src/prepare_payment.rs

bca/types/src/utxo.rs

bda/Cargo.toml

bda/src/exec_req_type.rs

bda/src/exec_req_type/balances.rs

bda/src/exec_req_type/current_ud.rs

bda/src/exec_req_type/last_blockstamp_out_of_fork_window.rs

bda/src/exec_req_type/members_count.rs

bda/src/exec_req_type/peers.rs

bda/src/exec_req_type/prepare_simple_payment.rs

bda/src/exec_req_type/send_txs.rs

bda/src/exec_req_type/utxos.rs

bda/src/lib.rs

db/Cargo.toml