feat: unify `BlobParams` and `BlobScheduleItem` #5774

Job	Run time
check no_std	1m 10s
clippy	57s
doctest	3m 30s
docs	2m 9s
feature-checks	4m 28s
fmt	11s
wasm-unknown	1m 10s
test ubuntu-latest stable --no-default-features	2m 11s
wasm-wasi	4m 39s
test ubuntu-latest stable	2m 6s
test ubuntu-latest stable --all-features	2m 39s
test ubuntu-latest nightly --no-default-features	2m 39s
test ubuntu-latest nightly	2m 45s
test ubuntu-latest nightly --all-features	3m 5s
test ubuntu-latest 1.81 --no-default-features	1m 17s
test ubuntu-latest 1.81	1m 7s
test windows-latest stable --no-default-features	4m 14s
test windows-latest stable	4m 15s
test windows-latest stable --all-features	4m 13s
test windows-latest nightly --no-default-features	4m 50s
test windows-latest nightly	4m 50s
test windows-latest nightly --all-features	4m 37s
test windows-latest 1.81 --no-default-features	2m 52s
test windows-latest 1.81	2m 23s
deny / cargo deny check	23s
ci success	2s
	1h 8m 42s

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