feat: builder fns for PrivateTransactionRequest and inner props (#1954) #6052

Job	Run time
wasm-wasi	1m 18s
doctest	1m 21s
test ubuntu-latest stable --no-default-features	1m 43s
test ubuntu-latest stable	2m 8s
test ubuntu-latest stable --all-features	2m 48s
check no_std	48s
clippy	45s
docs	2m 10s
test ubuntu-latest nightly --no-default-features	3m 0s
test ubuntu-latest nightly	2m 53s
feature-checks	3m 52s
feature-propagation	49s
fmt	12s
test ubuntu-latest nightly --all-features	3m 16s
test ubuntu-latest 1.81 --no-default-features	1m 5s
wasm-unknown	1m 2s
test ubuntu-latest 1.81	1m 18s
test windows-latest stable --no-default-features	4m 45s
test windows-latest stable	5m 9s
test windows-latest stable --all-features	6m 8s
test windows-latest nightly --no-default-features	6m 42s
test windows-latest nightly	6m 37s
test windows-latest nightly --all-features	7m 40s
test windows-latest 1.81 --no-default-features	2m 31s
test windows-latest 1.81	2m 30s
deny / cargo deny check	22s
ci success	1s
	1h 12m 53s

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