feat:(core): add `content encoding` to `Opwrite` #2117

Job	Run time
build_all_features	5m 11s
build_all_platforms (ubuntu-latest)	2m 30s
build_all_platforms (macos-latest)	3m 9s
build_under_wasm	43s
build_all_platforms (windows-latest)	6m 27s
build_default_features (ubuntu-latest)	34s
build_default_features (macos-latest)	53s
check_clippy	3m 50s
build_default_features (windows-latest)	2m 38s
check_docs	3m 31s
check_msrv	32s
unit	7m 1s
	36m 59s

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