Sign JSON transactions with ledger & Search for Ledger Keys Pro

[Takadenoshi]

Added two new pages:

• Signing arbitrary JSON transactions via ledger. This uses the signTransaction API, not the hash sign API, so the ledger shows all the details nicely. The page attempts to detect:

  • if the right key is selected to sign (and complain otherwise)
  • if all signers have signed, it offers to submit the txn as well

• Search for Ledger Key

  • Allows iterating the available keys/paths on the Ledger to find a key/specific address, or a key prefix

Minor Changes:

• Added error warning for Firefox - does not support HID. Probably need one for Safari as well.
• Build a small sub page for the 3 ledger tools, homepage now has "Ledger Tools" button that goes to it.

Preview: https://sign-json-ledger.kdtjs4taka.pages.dev/ledger

[Takadenoshi]

Added: bugfix for ledger hash signing - the sigs were not encoded correctly