Make CuYao an extension

[GiggleLiu]

Instead of installing CuYao, the CUDA extension can be access by typing

julia> using Yao, CUDA

julia> reg = rand_state(5) |> cu
ArrayReg{2, ComplexF64, CuArray...}
    active qubits: 5/5
    nlevel: 2

To test the CUDA extension, please run

$ make test-CuYao

Some extra make targets are added:

• make init and make init-docs to initialize Yao and docs environment.

• make update and make update-docs to update the above environments.

• make test-<package name> to test a component package.

• make test to test all component packages.

• make coverage to test all component packages and generate the coverage files.

• make is a combinaton of make init and make test

• make-servedocs to serve documents.

• make clean to clean up document build and .cov files.

Maybe we can remove .ci in the future.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.75%. Comparing base (e17a32b) to head (ac15ea8).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #494      +/-   ##
==========================================
- Coverage   89.03%   88.75%   -0.29%     
==========================================
  Files          83       87       +4     
  Lines        4835     5264     +429     
==========================================
+ Hits         4305     4672     +367     
- Misses        530      592      +62     

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[GiggleLiu]

@Roger-luo all tests pass except the nightly.

[Roger-luo]

how is CUDA current being tested in CI? I don't see any test being setup in the CI?

[Roger-luo]

do we actually support both versions?

[GiggleLiu]

I think so? We can remove it later if its not compatible anymore.

[GiggleLiu]

how is CUDA current being tested in CI? I don't see any test being setup in the CI?

I haven't setup the CI yet, we need to test locally. We do not have tests for CuYao for long time.

[Roger-luo]

do we actually need this to build the doc?

[GiggleLiu]

No, it is just convenient, otherwise you will have to start a temp environment and install LiveServer. Do you have a better option? Now the workflow is

make init-docs   # initialize the docs environment
make servedocs    # live serve

[Roger-luo]

I'd just use a separate Project.toml file for dev only within .ci directory. So you can keep the main environment clean. This is where I hate the stack env design... but LiveServer is not that big to download so prob fine if you insist.

[GiggleLiu]

Oh I see. We can fix this issue in the future when this workflow causes any trouble.