.NET: Durable Agents: platforms should use consistent entity method names

[philliphoff]

Currently, the entities used to implement durable agents use different method names for invoking the agents, RunAgentAsync on .NET and run_agent on Python. This inconsistency makes it difficult for tools (such as the DTS Dashboard) to interact with the agents at the entity-level (as opposed to having developers go through their application level for testing).

We should use a common set of entity method names across the platforms. (I'd suggest RunAgent but I don't have a strong opinion.)

[anthonychu]

Ideally the current method name would still continue to work for at least a few more versions before removing.

[cgillum]

Closing issue as PRs for both .NET and Python have been merged.