Rename ConnectorException to ConnectorError (Azure SDK TypeScript naming convention)

[daviburg]

Context

The Node SDK uses ConnectorException following the .NET naming convention. Azure SDK TypeScript guidelines require the Error suffix for all error/exception types.

Issue

// Current (follows .NET convention)
export class ConnectorException extends Error { ... }

// Azure SDK TypeScript guideline
export class ConnectorError extends Error { ... }

The @azure/core-rest-pipeline package uses RestError, not RestException. All Azure SDK JS packages follow the Error suffix consistently.

Proposed change

1. Rename ConnectorException → ConnectorError in src/azureConnectors/connectorException.ts
2. Update all imports and catch clauses across the codebase
3. Update the throw new ConnectorException(...) calls in all 12 generated *Extensions.ts files to throw new ConnectorError(...)
4. Update the barrel export in src/azureConnectors/index.ts

This is a breaking change — coordinate with the @azure/core-rest-pipeline adoption issue where ConnectorError would extend RestError instead of the built-in Error.

Azure SDK guideline

Error naming: use Error suffix