[WIP] Add list participants command for onboarding module

src/cmds/registry-cmds/onboarding-cmds/list.ts

@@ -0,0 +1,29 @@
+import { Arguments } from 'yargs';
+import assert from 'assert';
+import { Registry } from '@cerc-io/registry-sdk';
+
+import { getConfig, getConnectionInfo, queryOutput } from '../../../util';
+
+export const command = 'list';
+
+export const desc = 'List participants.';
+
+export const builder = {
+  owner: {
+    type: 'string'
+  }
+};
+
+export const handler = async (argv: Arguments) => {
+  const { services: { registry: registryConfig } } = getConfig(argv.config as string);
+  const { rpcEndpoint, gqlEndpoint, chainId } = getConnectionInfo(argv, registryConfig);
+  assert(rpcEndpoint, 'Invalid registry RPC endpoint.');
+  assert(gqlEndpoint, 'Invalid registry GQL endpoint.');
+  assert(chainId, 'Invalid registry Chain ID.');
+
+  const registry = new Registry(gqlEndpoint, rpcEndpoint, chainId);
+
+  const result = await registry.getParticipants();
+
+  queryOutput(result, argv.output);
+};