test(chain): add several basic scenarios to test transaction conflicts #6357

Job	Run time
Check no_std	51s
Build & Test Examples (example_cli)	35s
Check WASM	1m 3s
Build & Test Examples (example_bitcoind_rpc_polling)	41s
Build & Test Examples (example_electrum)	51s
Rust fmt	6s
Build & Test Examples (example_esplora)	1m 3s
Build and test (stable, true, --no-default-features --features miniscript/no-std)	1m 24s
Build & Test Examples (example_wallet_electrum)	49s
Build and test (stable, true, --all-features)	2m 14s
Build & Test Examples (example_wallet_esplora_async)	1m 4s
prepare	3s
Build and test (1.63.0, --no-default-features --features miniscript/no-std)	2m 14s
Build & Test Examples (example_wallet_esplora_blocking)	1m 0s
Build and test (1.63.0, --all-features)	1m 55s
Build & Test Examples (example_wallet_rpc)	36s
clippy_check	1m 38s
	18m 7s

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