feat(primitives): Add Borsh support for `TxKind` (#1022) #2744

Job	Run time
wasm	49s
miri	6m 50s
features stable	3m 3s
miri --no-default-features	5m 55s
features stable --all-targets	4m 4s
features nightly	2m 58s
miri --all-features	9m 45s
clippy	1m 19s
check no_std	57s
features nightly --all-targets	4m 14s
typos	9s
docs	1m 19s
test ubuntu-latest stable --no-default-features	1m 13s
test ubuntu-latest nightly --no-default-features	1m 11s
test ubuntu-latest 1.85	39s
test ubuntu-latest 1.85 --no-default-features	44s
test ubuntu-latest stable	1m 10s
fmt	16s
test windows-latest stable	2m 45s
test windows-latest nightly	2m 56s
test windows-latest nightly --all-features	3m 49s
test windows-latest 1.85	2m 36s
test windows-latest stable --no-default-features	2m 42s
test windows-latest nightly --no-default-features	3m 34s
test windows-latest 1.85 --features json	2m 1s
test ubuntu-latest nightly --all-features	1m 41s
deny / cargo deny check	16s
test ubuntu-latest 1.85 --features json	42s
test windows-latest 1.85 --no-default-features	1m 55s
test ubuntu-latest nightly	1m 13s
ci success	5s
	1h 12m 50s

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