Implement hierarchical namespace lookups. #21529

Job	Run time
build-sway-lib-core	4m 11s
get-fuel-core-version	47s
build-reference-examples	4m 10s
build-sway-examples	4m 8s
build-sway-lib-std	1m 14s
forc-fmt-check-sway-lib-core	4m 6s
check-sdk-harness-test-suite-compatibility	48s
forc-fmt-check-panic	2m 15s
forc-fmt-check-sway-examples	3m 54s
forc-fmt-check-sway-lib-std	3m 53s
build-forc-doc-sway-lib-std	1m 46s
build-forc-test-project	4m 19s
build-mdbook	2m 24s
cargo-build-workspace	1m 50s
cargo-toml-fmt-check	2m 36s
cargo-clippy	4m 24s
cargo-fmt-check	15s
cargo-run-e2e-test-evm	8m 23s
cargo-test-lib-std	1m 6s
cargo-run-e2e-test-midenvm	2m 45s
cargo-test-sway-lsp	6m 36s
forc-pkg-fuels-deps-check	37s
forc-unit-tests	1m 6s
forc-run-benchmarks	5m 35s
cargo-test-workspace	8m 39s
cargo-unused-deps-check	4m 18s
pre-publish-check	0s
cargo-run-e2e-test	7m 2s
cargo-run-e2e-test-release	7m 0s
cargo-test-forc-client	4m 7s
cargo-test-forc-debug	3m 58s
notify-slack-on-failure	0s
publish	0s
build-publish-master-image	0s
build-publish-release-image	0s
Build and upload forc binaries to release	0s
	1h 48m 12s

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