Add some drag-and-drop-related APIs in `Response` and `Memory` #8841

Job	Run time
Check wasm32 + wasm-bindgen	2m 29s
cargo-deny aarch64-apple-darwin	40s
Format + check + test	5m 16s
cargo-deny aarch64-linux-android	39s
cargo-deny i686-pc-windows-gnu	40s
cargo-deny i686-pc-windows-msvc	38s
cargo-deny i686-unknown-linux-gnu	41s
cargo-deny wasm32-unknown-unknown	38s
android	23s
cargo-deny x86_64-apple-darwin	42s
cargo-deny x86_64-pc-windows-gnu	43s
cargo-deny x86_64-pc-windows-msvc	42s
Check Windows	2m 25s
cargo-deny x86_64-unknown-linux-gnu	42s
cargo-deny x86_64-unknown-linux-musl	44s
cargo-deny x86_64-unknown-redox	39s
	18m 41s

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