Add Account Activities Endpoint

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Is your feature request related to a problem? Please describe.

I wasn’t able to find a method for getting account activities. Would it be possible to add a method for the Getting Account Activities for a Trading API account.

### Describe the solution you'd like.

The endpoint documentation is covered at this link.

[Trading API docs Account Activities](https://alpaca.markets/docs/api-references/trading-api/account-activities/)

### Describe an alternate solution.

_No response_

### Anything else? (Additional Context)

_No response_