Place VoterWeightRecord and MaxVoterWeightRecord by default address

[s-medvedev]

spl-governance UI SDK expects that VoterWeightRecord and MaxVoterWeightRecord will be located by default address. These addresses calculate like this:

const [maxVoterWeightRecordAddress] = await PublicKey.findProgramAddress(
    [
      Buffer.from('max-voter-weight-record'),
      realm.toBuffer(),
      governingTokenMint.toBuffer(),
    ],
    programId,
  );

const [voterWeightRecordAddress] = await PublicKey.findProgramAddress(
    [
      Buffer.from('voter-weight-record'),
      realm.toBuffer(),
      governingTokenMint.toBuffer(),
      governingTokenOwner.toBuffer(),
    ],
    programId,
  );

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