Integrate ecdsa

[andrew-fleming]

WIP

component	repo has now	ECDSA-capable (available today, pre-release)	anticipated stable
compactc (compiler)	0.31.x line (repo compact toolchain)	0.33.0-rc.2	0.33.0
compact-runtime	0.16.0	0.18.0-rc.1	0.18.0
midnight-js-*	4.1.1	5.0.0-beta.6	5.0.0
compact-js	—	2.5.5-rc.7	~2.5.5
ledger-v9 (JS) @midnightntwrk/ledger-v9	(uses ledger-v8@8.1.0)	1.0.0-rc.3	1.0.0
onchain-runtime-v4 @midnightntwrk/onchain-runtime-v4	—	4.0.0-rc.3	4.0.0
node / ledger (on-chain)	mainnet = 1.0.x / ledger-8	node 2.0.0-rc.4 / ledger 9.1.0.0-rc.3	node 2.0.0 / ledger 9.1.0.0

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