Add signature providers

Requires: common-ci-configuration!75 (merged)

ts/packages/signers-peakvault/src/index.ts

+import type { IOnlineSignatureProvider, ITransaction, TAccountName, TRole } from "@hiveio/wax";
+
+import { getWallet } from '@peakd/hive-wallet-sdk'
+
+// @peakd/hive-wallet-sdk fails to provide this type import
+type KeyRole = Parameters<typeof PeakVaultProvider['peakVaultWallet']['signTx']>[2];
+
+const mapRoles: Record<TRole, KeyRole | undefined> = {
+  active: 'active',
+  posting: 'posting',
+  owner: undefined,
+  memo: 'memo'
+};
+
+const PEAKVAULT_WALLET_ID: Parameters<typeof getWallet>[0] = 'peakvault';
+
+// We do not extend from WaxError to avoid runtime dependencies, such as: /vite or /web - without it we can import only types
+export class WaxPeakVaultProviderError extends Error {}
+
+/**
+ * Wax transaction signature provider using the Peak Vault.
+ *
+ * @example
+ * ```
+ * const provider = PeakVaultProvider.for("myaccount", "active");
+ *
+ * // Create a transaction using the Wax Hive chain instance
+ * const tx = await chain.createTransaction();
+ *
+ * // Perform some operations, e.g. pushing operations...
+ *
+ * // Sign the transaction
+ * await tx.sign(provider);
+ *
+ * // broadcast
+ * await chain.broadcast(tx);
+ * ```
+ */
+class PeakVaultProvider implements IOnlineSignatureProvider {
+  private readonly role: KeyRole;
+
+  private static peakVaultWallet: Awaited<ReturnType<typeof getWallet>>;
+
+  private constructor(
+    private readonly accountName: TAccountName,
+    role: TRole
+  ) {
+    if (!mapRoles[role])
+      throw new Error(`Role ${role} is not supported by the Wax signature provider: ${PeakVaultProvider.name}`);
+
+    this.role = mapRoles[role];
+  }
+
+  public static for(accountName: TAccountName, role: TRole): PeakVaultProvider {
+    return new PeakVaultProvider(accountName, role);
+  }
+
+  public async signTransaction(transaction: ITransaction): Promise<void> {
+    if (!PeakVaultProvider.peakVaultWallet)
+      PeakVaultProvider.peakVaultWallet = await getWallet(PEAKVAULT_WALLET_ID);
+
+    const data = await PeakVaultProvider.peakVaultWallet.signTx(this.accountName, JSON.parse(transaction.toLegacyApi()), this.role);
+
+    for(const sig of data.result.signatures)
+      transaction.sign(sig);
+  }
+}
+
+export default PeakVaultProvider;