Add direct Ledger wallet support, including for Injective

[jmrossy]

This was originally included in the wallet list but disabled during the big Ledger hack a few months ago.
Recommend doing this task first: #173
And then adding Ledger to the wallet lists (see CosmosWalletContext and EvmWalletContext).

As for Injective support, that needs more investigation. The custom tx format patch applied to cosmjs may interfere with Ledger integration via cosmos-kit.

Related discussion:
https://discord.com/channels/935678348330434570/1008821009731829810/1250598928777482332