feat(primitives): add and use foldhash as default hasher #2069

Job	Run time
docs	34s
clippy	48s
check no_std	44s
fmt	13s
miri --no-default-features	4m 37s
miri	2m 31s
test ubuntu-latest stable --no-default-features	1m 9s
features stable	1m 29s
test ubuntu-latest stable	57s
wasm	33s
miri --all-features	3m 47s
features stable --all-targets	3m 9s
test ubuntu-latest nightly --no-default-features	45s
features nightly	1m 40s
test ubuntu-latest nightly	48s
features nightly --all-targets	3m 3s
test ubuntu-latest 1.79 --no-default-features	30s
test ubuntu-latest 1.79	27s
test windows-latest stable --no-default-features	2m 13s
test windows-latest stable	2m 2s
test windows-latest nightly --no-default-features	1m 52s
test windows-latest nightly	2m 13s
test windows-latest 1.79 --no-default-features	1m 5s
test windows-latest 1.79	1m 9s
test ubuntu-latest 1.79 --features json	27s
test windows-latest 1.79 --features json	1m 20s
test ubuntu-latest nightly --all-features	1m 8s
test windows-latest nightly --all-features	2m 27s
	43m 40s

Provide feedback