docs: to README.md add tests troubleshooting (run in series) #6344

Job	Run time
Check no_std	14s
Build and test (stable, true, --no-default-features --features miniscript/no-std)	1m 26s
Build & Test Examples (example_cli)	19s
Build and test (stable, true, --all-features)	4m 3s
Build & Test Examples (example_bitcoind_rpc_polling)	20s
Check WASM	33s
Build and test (1.63.0, --no-default-features --features miniscript/no-std)	2m 28s
Build & Test Examples (example_electrum)	43s
Build and test (1.63.0, --all-features)	5m 4s
Build & Test Examples (example_esplora)	59s
Rust fmt	7s
Build & Test Examples (example_wallet_electrum)	55s
prepare	3s
Build & Test Examples (example_wallet_esplora_async)	1m 5s
Build & Test Examples (example_wallet_esplora_blocking)	1m 1s
Build & Test Examples (example_wallet_rpc)	30s
clippy_check	28s
	20m 18s

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