Refactor CurrentTimings #2199

Job	Run time
Test	35s
Test (charset)	43s
Test (cookies)	47s
Test (socks-proxy)	31s
Test (gzip)	39s
Lint	37s
Test (brotli)	43s
Test (json)	34s
Docs	20s
build_versions (stable)	9s
build_versions (beta)	21s
cargo-deny (aarch64-apple-ios)	23s
build_versions (1.67.0)	21s
cargo-deny (aarch64-linux-android)	29s
cargo-deny (i686-pc-windows-gnu)	18s
cargo-deny (i686-pc-windows-msvc)	22s
cargo-deny (i686-unknown-linux-gnu)	17s
cargo-deny (wasm32-unknown-unknown)	20s
cargo-deny (x86_64-apple-darwin)	22s
cargo-deny (x86_64-apple-ios)	17s
cargo-deny (x86_64-pc-windows-gnu)	17s
cargo-deny (x86_64-pc-windows-msvc)	19s
cargo-deny (x86_64-unknown-linux-gnu)	19s
cargo-deny (x86_64-unknown-redox)	19s
	10m 22s

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