[Frontend] Split non-commuting observables

[lillian542]

Context: State-based simulators can generally get the values for non-commuting observables together on a single execution. Hardware and some simulators require non-commuting observables to be separated into different executions.

Description of the Change: We add a non_commuting_observables flag to the TOML file. If True, the device can deal with non-commuting observables.

We check the non_commuting_observables_flag in device.preprocess, and add the split_non_commuting transform to the transform_program if it's False.

[lillian542]

[sc-60186]

[github-actions[bot]]

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.96%. Comparing base (5612227) to head (3a7aa23).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #821 +/- ## ======================================= Coverage 97.95% 97.96% ======================================= Files 71 71 Lines 10244 10248 +4 Branches 902 903 +1 ======================================= + Hits 10035 10039 +4 Misses 167 167 Partials 42 42 ```

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[lillian542]

Edit: wrong story ID [sc-60187]

[lillian542]

[sc-60188]

[dime10]

Did we add the flag to lightning as well? :)

[lillian542]

Did we add the flag to lightning as well? :)

Yes!