AgentConfig -> Config (and misc) #2241

Job	Run time
Docs	21s
Lint	17s
build_versions (stable)	8s
Test	32s
build_versions (beta)	16s
cargo-deny (aarch64-apple-ios)	19s
Test (charset)	33s
build_versions (1.67.0)	18s
cargo-deny (aarch64-linux-android)	18s
Test (cookies)	42s
cargo-deny (i686-pc-windows-gnu)	18s
Test (socks-proxy)	35s
cargo-deny (i686-pc-windows-msvc)	21s
Test (gzip)	33s
cargo-deny (i686-unknown-linux-gnu)	19s
Test (brotli)	33s
cargo-deny (wasm32-unknown-unknown)	17s
Test (json)	44s
cargo-deny (x86_64-apple-darwin)	17s
cargo-deny (x86_64-apple-ios)	21s
cargo-deny (x86_64-pc-windows-gnu)	18s
cargo-deny (x86_64-pc-windows-msvc)	19s
cargo-deny (x86_64-unknown-linux-gnu)	17s
cargo-deny (x86_64-unknown-redox)	19s
	9m 15s

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