rudimentary function calls

[cameron]

We're having intermittent issues with getting properly formatted JSON in our results, so figured I'd take a swing at this.

It's far from ideal or feature-complete, but I'd love input — I don't have a lot of experience with Swift, and expect there may be better ways!

Done:

• [x] basic tool definitions w primitive parameters
• [x] parse invocation xml into array of function names and arguments (all strings)
• [x] return function calls as json data for convenient decoding

TODO (before merging?):

• [ ] better type support in definitions (currently: string, number, integer)
• [ ] better type support in invocations
• [ ] remove xml from parsed response content
• [ ] include API keys via xcconfig for running tests

[jamesrochabrun]

sorry the late response please check this new release https://github.com/jamesrochabrun/SwiftAnthropic/releases/tag/1.4

[jamesrochabrun]

@cameron Thanks for your contribution! I think you can use now the beta version of function calling.