Make image sampling pad in all directions and remove half-pixel offset #1745

Job	Run time
cargo check (aarch64-android)	45s
cargo check (msrv) (windows-latest)	1m 36s
cargo check (msrv) (wasm32)	38s
cargo clippy (windows-latest)	2m 1s
cargo check (msrv) (macos-latest)	45s
cargo clippy (macos-latest)	1m 10s
cargo check (msrv) (ubuntu-latest)	41s
cargo clippy (wasm32)	1m 16s
cargo clippy (ubuntu-latest)	1m 24s
cargo doc	1m 42s
formatting	22s
Prime LFS Cache	4s
cargo test (wasm32)	24s
typos	5s
cargo test (windows-latest)	2m 1s
cargo test (macos-latest)	1m 43s
cargo test (ubuntu-latest)	2m 26s
	19m 3s

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