[UnitaryHack] Add Task Cancellation Braket Job

[WingCode]

• [x] I have added the tests to cover my changes.
• [x] I have updated the documentation and CHANGELOG accordingly.
• [x] I have read the CONTRIBUTING document.

closes #71

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.18 :tada:

Comparison is base (80f80fb) 97.98% compared to head (2219019) 98.17%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #73 +/- ## =========================================== + Coverage 97.98% 98.17% +0.18% =========================================== Files 2 2 Lines 149 164 +15 =========================================== + Hits 146 161 +15 Misses 3 3 ``` | [Impacted Files](https://app.codecov.io/gh/AgnostiqHQ/covalent-braket-plugin/pull/73?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=AgnostiqHQ) | Coverage Δ | | |---|---|---| | [covalent\_braket\_plugin/braket.py](https://app.codecov.io/gh/AgnostiqHQ/covalent-braket-plugin/pull/73?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=AgnostiqHQ#diff-Y292YWxlbnRfYnJha2V0X3BsdWdpbi9icmFrZXQucHk=) | `97.91% <100.00%> (+0.24%)` | :arrow_up: |

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[kessler-frost]

Hey @WingCode! Thanks for this PR, it seems that for this one as well the diff's code coverage isn't up to the threshold. Please let me know if you need any help with that!

[kessler-frost]

Thanks @WingCode, gtg 💯 !