chore: Feature gate redb based store. #554

Job	Run time
Cross Build Only (x86_64-unknown-freebsd)	51s
Android Build Only (armv7-linux-androideabi)	1m 33s
Cross Test (i686-unknown-linux-gnu)	5m 1s
check_semver	1m 28s
Minimal Supported Rust Version	1m 4s
Android Build Only (aarch64-linux-android)	1m 39s
cargo deny	25s
Checking fmt	27s
clippy_check	1m 11s
Checking docs	1m 13s
codespell	6s
CI Test Suite / Tests (ubuntu-latest, stable, none)	25s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	2m 35s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 35s
CI Test Suite / Tests (ubuntu-latest, stable, all)	2m 11s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 43s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	36s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	1m 41s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	1m 22s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	2m 8s
	29m 14s

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