Add the spec text and examples for MLGraph.compute

[huningxin]

@wchao1115 @pyu10055 @anssiko , PTAL.

Hopefully, it would fix #140 @cynthia, please also take a look.

Another note is, for the spec of ML device interactions, I found the timelines of WebGPU spec is quite useful. So I adapted and included it in this PR.

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[anssiko]

@huningxin, thank you for this substantial PR. LGTM for the general direction.

I suggest we seek review from WebGPU folks for the timeline convention we've borrowing from the WebGPU spec. @kainino0x may be interested in taking a quick look on that particular aspect.

[huningxin]

I suggest we seek review from WebGPU folks for the timeline convention we've borrowing from the WebGPU spec. @kainino0x may be interested in taking a quick look on that particular aspect.

Absolutely, also cc @Kangz

[huningxin]

Thanks for review, also @RafaelCintron for comments.

[huningxin]

I'll rework this PR due to #149 and potential change being discussed in #149 (comment)

[wchao1115]

@huningxin Can you update the PR to reflect the new naming in the spec?

[huningxin]

@huningxin Can you update the PR to reflect the new naming in the spec?

@wchao1115 , done. Actually reworked this PR regarding to #149 .

Please note this PR only specifies the MLGraph.compute algorithm steps for default context with inputs/outputs are ArrayBufferView. An issue was added inline into the spec that tracks the algorithm steps for WebGL/WebGPU interops.

Please take another look. Thanks!

[huningxin]

The conflict was resolved, I am going to merge it, thanks for the review and approvals.