Impl Serialize/Deserialize for FilterType #1751

Job	Run time
Fuzz targets (cargo-fuzz)	46s
Fuzz targets (afl)	2m 7s
build_benchmarks	44s
cargo-deny	18s
cargo-semver-checks	25s
clippy	2m 0s
public_private_dependencies	23s
rustfmt	8s
test_avif_decoding	1m 24s
test_features	15s
test_other_archs (powerpc-unknown-linux-gnu)	2m 19s
test_features (default)	1m 37s
test_toolchains (1.70.0)	30s
test_features (rayon)	38s
test_other_archs (i686-unknown-linux-gnu)	1m 20s
test_features (avif)	55s
test_features (bmp)	18s
test_toolchains (nightly)	1m 41s
test_features (dds)	20s
test_toolchains (beta)	1m 23s
test_features (exr)	39s
test_features (ff)	17s
test_features (gif)	23s
test_features (hdr)	26s
test_features (ico)	33s
test_features (jpeg)	37s
test_features (png)	26s
test_features (pnm)	18s
test_features (qoi)	17s
test_features (tga)	24s
test_features (tiff)	29s
test_features (webp)	23s
	24m 43s

Provide feedback