Changes

WWW: Replace Gephi icon w/ a more friendly JogAmp website matching preview one (white background, showing a graph)

Animator*: Add ctor variants passing modeBits directly, i.e. enable/disable AWT rendering thread support. Adopt it in tests and demos

Demos: Add main() to GearsES2, .. allowing to be used for simple bringup tests

GraphUIDemoArgs: Add GL4 core

Texture ctor w/ external textureID: Pass `ownsTextureID` where true hands over ownership and allows destroy() to delete it, otherwise not. Fixes GraphUI's GLButton.

GraphUI's GLButton uses the offscreen's FBO texture and hence can't pass over ownership of the texture.
Hence the Texture instance is created w/o handing over ownership!

GLMediaPlayerImpl does hand over ownership of the generated and passed texture to the Texture ctor.

make/scripts/tests.sh: Add Basic demos if jogl-demos.jar

Minor cleanup of imports, etc: FBObject, GLContext*, Texture, ..

TODO: Full cleanup perhaps

UISceneDemo20: Fix info/debug text title GPUUISceneGLListener0A -> UISceneDemo20

GraphUIDemoArgs: Issue GLProfile.initSingleton() once in static init block, ensuring JOGL is completely initialized

Noteable: On MacOS 13.1 (aarch64) UISceneDemo20 won't show the window if NEWT is initialized before JOGL core via GLProfile.initSingleton().

Demos: ..demos.graph.ui.util.GraphUIDemoArgs -> ..demos.util.CommandlineOptions

MacOS test scripts: Enable FFmpeg6 from Homebrew

Install Homebrew https://brew.sh/
> /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
Follow further directions...

Install FFmpeg (Currently v6) https://formulae.brew.sh/formula/ffmpeg
> brew install ffmpeg
or
> brew install fmpeg@6

Leaves the ffmpeg libraries in:
- x86_64: /usr/local/Cellar/ffmpeg/6.0/lib
- aarch64: /opt/homebrew/Cellar/ffmpeg/6.0/lib