[Codegen] Support v3 lro poller without backward compatibility

[HarshaNalluru]

Support v3 poller without backward compatibility too

Refer to the changes at Azure/azure-sdk-for-js@15629cd

1. Removed Imports:

   • Removed imports related to AbortSignalLike, CancelOnProgress, and CreateHttpPollerOptions from @azure/core-lro.

2. Function Signature Changes:

   • The functions getLongRunningPoller signatures were changed:
     • The return type changed from Promise<SimplePollerLike<OperationState<TResult>, TResult>> to PollerLike<OperationState<TResult>, TResult>.
     • The parameter options type changed from CreateHttpPollerOptions<TResult, OperationState<TResult>> to GetLongRunningPollerOptions.

3. Removed Interface:

   • The SimplePollerLike interface was removed.

4. Added Interface:

   • Introduced a new interface GetLongRunningPollerOptions with properties intervalInMs and restoreFrom.

     export interface GetLongRunningPollerOptions {
       intervalInMs?: number;
       restoreFrom?: string;
     }

5. Function Implementation Changes:

   • The implementation of getLongRunningPoller now returns createHttpPoller(poller, options) directly instead of wrapping it in a SimplePollerLike.

These changes simplify the poller-related code by removing backward compatibility methods and interfaces, focusing only on the v2 poller.

[HarshaNalluru]

cc @joheredi @deyaaeldeen @jeremymeng

[HarshaNalluru]

Clarification

• This is for the packages that do not need backward compatibility
• We are imagining an option/flag to be set to enable or disable this @deyaaeldeen