build: add "fastest-runtime" profile for runtime optimization #23278

Job	Run time
Clang format	10s
Rustfmt	23s
Determine CI jobs to run	6s
Check	12m 47s
Cargo vet	0s
Doc build	0s
Cargo deny	0s
Check Windows ARM64	0s
Test C-API ubuntu-latest	6m 47s
Test Linux x86_64	15m 53s
Test C-API macos-latest	4m 41s
Nightly tests	0s
Test C-API windows-latest	9m 7s
Run benchmarks	0s
Build wasi-preview1-component-adapter	0s
Build wasmtime-target-wasm32	0s
Test the min-platform example	0s
Release build for ${{ matrix.build }}	0s
Meta deterministic check	0s
Miri	0s
verify-publish	0s
Cargo vet failed on a Pull Request	0s
Record the result of testing and building steps	1s
push-tag	0s
	49m 55s

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