Check GPU feature compatibility

[tinyjin]

• Firefox/Safari/Chrome(mobile) browsers don't run WebGPU as a default option.
• Also users could toggle off GPU flags before
• OS/Platform may not support hardware acceleration due to lack of systems.

In these cases, users will face runtime error(likely nothing shown on the canvas), could assume it's library error.
To avoid those situations, library should notice users about browser compatibility.

Related: thorvg/thorvg.viewer#85

[hermet]

@tinyjin We can make the viewer quickly fall back to the software renderer if the GL/WGPU render backend initialization fails.