feature: WalletProvider #1937

Job	Run time
feature-checks	2m 12s
doctest	51s
no-std	13s
test stable --no-default-features	1m 9s
wasm-unknown	26s
wasm-wasi	51s
test stable	1m 13s
cfg-check	25s
test stable --all-features	1m 42s
test nightly --no-default-features	1m 14s
clippy	38s
test nightly	1m 8s
docs	55s
fmt	13s
test nightly --all-features	1m 58s
test 1.76 --no-default-features	39s
test 1.76	32s
	16m 19s

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