feat: implement getAccountInfo method

This PR adds new method to get account info. It takes in an account: PublicKeyString and returns a summary of the account:

const res = await sdk.getAccountInfo({ account: aliceKeypair.publicKey })

{
   "account":"ALisrzsaVqciCxy8r6g7MUrPoRo3CpGxPhwBbZzqZ9bA",
   "isMint":false,
   "isOwner":true,
   "isTokenAccount":false,
   "owner":null,
   "program":null,
   "tokens":[
      {
         "account":"Ebq6K7xVh6PYQ8DrTQnD9fC91uQiyBMPGSV6JCG6GPdD",
         "balance":"87564.19775",
         "closeAuthority":null,
         "decimals": 0,
         "mint":"MoGaMuJnB3k8zXjBYBnHxHG47vWcW3nyb7bFYvdVzek",
         "owner":"ALisrzsaVqciCxy8r6g7MUrPoRo3CpGxPhwBbZzqZ9bA"
      }
   ]
}

It detects if an account is a mint, a token account or an owner account.

Follow-up:

Implement in the other SDKs:

[ ] Android https://github.com/kin-labs/kinetic-android-sdk/issues/18
[x] Dart https://github.com/kin-labs/kinetic-dart-sdk/issues/15
[ ] iOS https://github.com/kin-labs/kinetic-ios-sdk/issues/7
[x] Python https://github.com/kin-labs/kinetic-python-sdk/issues/31
[x] Unity https://github.com/kin-labs/kinetic-unity-sdk/issues/13

kin-labs / kinetic

feat: implement getAccountInfo method #502

Follow-up:

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