1-1 feature parity with Kotlin

[ori-shem-tov]

• Added msgpack test
• Added rawSign and signAlgoTransaction
• Added more prefixes to check we don't sign other Algorand related stuff
• Removed prefixes check after decoding

[HashMapsData2Value]

Great that you added a link to Testnet.

My recommendation:

• Remove the encodeAddress function and simply import it from algosdk
• In the signAlgoTransaction test, check that the key encodes to the Algorand address in testnet.

import { decodeUnsignedTransaction, encodeAddress } from "algosdk"

...
...

// (the Pera testnet link comment)         

expect(encodeAddress(key)).toEqual("ML7IGK322ECUJPUDG6THAQ26KBSK4STG4555PCIJOZNUNNLWU3Z3ZFXITA")

After that LGTM

[ori-shem-tov]

@HashMapsData2Value
added.
please merge as I don't haver sufficient permissions