Adding GPU Support

[dhroth]

I've added support to GCPBatchExecutor for launching jobs with GPUs. I updated existing tests to account for the new functionality, but I wasn't sure whether I should add any new tests. I've tested it with GCP and have been able to submit jobs that launch VMs with a T4 GPU. I followed https://github.com/AgnostiqHQ/covalent-awsbatch-plugin/blob/develop/covalent_awsbatch_plugin/awsbatch.py, but also added the option to choose which GPU you want. I've attempted to follow the contributing guidelines, but please let me know if I missed anything!

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

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (0255a93) 96.66% compared to head (9622973) 96.42%.

Files	Patch %	Lines
covalent_gcpbatch_plugin/gcpbatch.py	90.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #30      +/-   ##
===========================================
- Coverage    96.66%   96.42%   -0.24%     
===========================================
  Files            3        3              
  Lines          270      280      +10     
===========================================
+ Hits           261      270       +9     
- Misses           9       10       +1     

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[kessler-frost]

Thanks a lot for this @dhroth ! This is super helpful, we've been meaning to add GPU support to this one for some time now. While we review this, do you mind creating an issue for this with a brief explanation of the added support if possible? Maybe even adding a small example workflow that you tried which was failing for you earlier but works after you added the GPU support. Would help us tremendously in keeping track of things 😅 . You can then attach this PR to that issue as well.

Again, thanks a lot and please feel free to ask here if you have any questions!

[santoshkumarradha]

Solves #34

[dhroth]

Hey, glad it's helpful! Sorry I was unresponsive for the last week. I see @santoshkumarradha has made an issue for this. Let me know if there's anything else that needs doing on this!