Add simpler TTS feature.

[jtrujil43]

CoPilot removed MaryTTS since JAM repository wasn't available. Now it will use the built in JavaTTS features built into OpenJSK 1.8

[defano]

Hi @jtrujil43, thanks for this PR. I agree that we should eliminate MaryTTS, which does not seem to be well-distributed anymore (I've had ongoing issues with its dependencies in the past). So I think you're on the right path with this.

However, there seem to be a few things missing in your change:

1. The build.gradle file needs to have a Speech implementation library included, like implementation 'net.sf.sociaal:freetts:1.2.2', otherwise, your check Class.forName("javax.speech.synthesis.Synthesizer") will always fail.

2. It seems you removed the code that actually calls the synthesizer. The speak() method now just logs a message and delays for a reasonable time, even when a synthesizer like freetts is available. Nothing actually invokes the speech synthesizer implementation to produce the text-to-speech audio.

Finally, your PR contains a .vscode directory/file that I don't believe should be committed. This file contains settings specific to your local machine.