Getter functions

[Vurv78]

Add functions to get information about a stream / IGmodAudioChannel object. For now only gonna support stuff like GetTagsHTTP which are constant throughout the stream, but I'm also thinking of ways to implement FFT and GetState

Stuff to Add:

• [ ] getAverageBitRate
• [ ] getBitsPerSample
• [ ] getSamplingRate
• [x] getLength
• [x] getTags functions (There's a ton)
• [x] getTime (Would be estimated from the server + playback rate, setTime)
• [x] getFileName

Not guaranteed to add:

• [x] getFFT (Could use a binary module to get the fft info of the stream, or have a function to enable periodic sending of fft data.)
• [x] getState (Could just make the client check if state changed, if so, send to server. Would be slightly delayed but it'd work.) Also includes stuff like getPos where you're the one setting the position so why aren't you just storing it yourself??

[Vurv78]

Adding getLength, getFileName and getTime right now. Will be pretty huge to be able to know the exact length of the sound & the position you're at in it.

[Vurv78]

Will probably also make a serverside version of getState, will have CHANNEL_STOPPED CHANNEL_PLAYING CHANNEL_PAUSED but no CHANNEL_BUFFERING since we aren't dealing with the client. Will just see if it goes over the duration of the stream and force it to CHANNEL_STOPPED, etc

[Vurv78]

Updated Stuff to Add: This is being updated with my local branch so you know how close I am to making a PR for this.

Easy:

• [x] getPos
• [x] getVolume
• [x] getRadius
• [x] ... Other functions that we already have setters for

Medium:

• [x] getFileName
• [x] getLength
• [x] getFFT

Requires Server Recreation (Hard)

• [x] getState
• [x] getTime (Already made this but it's inaccurate I think)

Other functions like getAverageBitRate will be added later since they're much less useful