Fix QR bug and cuQuantum QR

[j9263178]

Part of this PR address #203 and #68.

cuQuantum QR routine will now be used when the input UniTensor is on cuda device.
In that routine I currently disable the return_tau = true option since the API doesn't store tau or provide ways to retrieve it.

[kaihsin]

Make sure all the tests are passed

[codecov]

Codecov Report

Merging #254 (6d74402) into dev-master (9fb8b53) will increase coverage by 0.00%.
The diff coverage is 22.22%.

@@             Coverage Diff             @@
##           dev-master     #254   +/-   ##
===========================================
  Coverage       13.58%   13.58%           
===========================================
  Files             276      276           
  Lines           54898    54902    +4     
  Branches        24564    24564           
===========================================
+ Hits             7457     7458    +1     
- Misses          41630    41633    +3     
  Partials         5811     5811           

Files Changed	Coverage Δ
src/linalg/Qr.cpp	22.56% <0.00%> (ø)
src/linalg/linalg_internal_interface.cpp	89.34% <ø> (ø)
src/linalg/linalg_internal_cpu/QR_internal.cpp	19.04% <25.00%> (+0.23%)	⬆️

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