media: Remove debug.h, finalize MediaDebug.h

* Funny rust from 0 AD.

MediaClient: Revert debugging edits

* The -a argument ended up in my git commit inadvently,
sorry about that.

MediaConnection: Cleanup after disconnect

MediaClient: Rename IsRunning to IsStarted

MediaConnection: Add connection name handling

MediaClientDefs: Cleanup unneded methods

MediaConnection: Review format negotiation mechanism

MediaConnection: Remove format change protocol

MediaConnection: Hide connection callbacks

* At this point we want to avoid the user calling the callbacks
in the form of BMediaConnection. Instead we force to use the
BMediaInput and BMediaOutput versions.

MediaConnection: Move buffer management on producer side

MediaConnection: BufferSize should be inherited

* While it's trivial for audio to calculate the buffer size,
it isn't the same for video.

MediaConnection: Non simple connections should be inherited

* BSimpleMediaConnections are provided for that.
* Make SetOutputEnabled private.

MediaConnection: Remove latency range interface

* In preparation for the introduction of BMediaGraph.

MediaClient: IDs should be signed integers

* It's very important to use a negative value to identify
non valid or uninitialized connections. Additionally, it's preferred
to don't interfere with media_kit types as long as the framework use
it in the backend.

MediaClient: Add remaining wiring for input/output functionality

* BufferReceived is renamed HandleBuffer.
* Update doc.
* Implement buffer production private methods.

MediaConnection: Implement auto release

MediaClient: Polish destructors

* Make Release() the only public way to destroy a connection.

MediaClient: Fix style for private methods and other cleanup

* Cleaned up some unneeded callbacks.

Populate media/experimental with future media_kit classes

* Node implementations headers are move into src/kits/media.