new SolVec(options: SolVecConfig)

interface SolVecConfig {
  network: "mainnet-beta" | "devnet" | "localnet";
  walletPath?: string;
  rpcUrl?: string;
  shadowDrive?: boolean;
}

const index = sv.collection("my-index");

await index.upsert([
  {
    id:        string,
    values:    number[],
    metadata?: object
  }
])

const results = await index.query({
  vector:  number[],
  topK:    number,
  filter?: object
})

const proof = await index.verify();
// proof.merkleRoot        - 32-byte hex string
// proof.txSignature       - transaction signature
// proof.solanaExplorerUrl - explorer URL

async restoreFromShadowDrive(): Promise<boolean>
// Returns true if restored, false if no backup found