perf: Avoid allocations while constructing path segments #1115

Job	Run time
Verify commit messages	38s
Build on wasm32-unknown-unknown	43s
Run test coverage	1m 39s
Clippy	1m 23s
Check features	1m 16s
Rustfmt	14s
Generic pre-commit checks	24s
Python 3.7 on ubuntu-22.04	2m 24s
Test draft201909 (stable) on ubuntu-22.04	1m 28s
Python 3.8 on ubuntu-22.04	1m 59s
Test draft202012 (stable) on ubuntu-22.04	1m 27s
Python 3.9 on ubuntu-22.04	1m 54s
Test draft201909 (stable) on macos-12	3m 5s
Python 3.10 on ubuntu-22.04	1m 57s
Test draft202012 (stable) on macos-12	2m 19s
Python 3.11 on ubuntu-22.04	1m 50s
Test draft201909 (stable) on windows-2022	3m 8s
Python 3.12 on ubuntu-22.04	1m 57s
Test draft202012 (stable) on windows-2022	3m 7s
Python 3.7 on macos-12	6m 2s
Python 3.8 on macos-12	6m 23s
Python 3.9 on macos-12	4m 21s
Python 3.10 on macos-12	5m 8s
Python 3.11 on macos-12	4m 41s
Python 3.12 on macos-12	4m 43s
Python 3.7 on windows-2022	5m 4s
Python 3.8 on windows-2022	4m 19s
Python 3.9 on windows-2022	4m 18s
Python 3.10 on windows-2022	4m 14s
Python 3.11 on windows-2022	3m 49s
Python 3.12 on windows-2022	4m 11s
	1h 30m 5s

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