ci: added ci builds, tests, and deploys

[Mastermindzh]

This PR adds ci builds using Github actions.
Two of the steps are disabled:

• Deploy step, it needs secrets set up on the maintainer's part (see: documentation
• Tests, as described in issue Tests are not portable #17, tests are currently not quite portable enough for me to set up in CI

fixes #15

[pascal89]

Nice. I think the test project can be converted to be able to run it in the pipeline. Have a look at this PR: #13 ;-)

[Mastermindzh]

Oh I agree, just didn't have the time to do it (read: didn't want to invest more at the time) 😄.
Are you waiting on it to do your IGrowthBook tests?

[darklordzw]

@pascal89, PR #13 has been merged into main.

[Mastermindzh]

I'll fix this after eating 😄 , Thanks for merging #13

[Mastermindzh]

@darklordzw,

Let me know how you want to do this merge. I got all the tests moved over to XUnit.

You can see the PR here: frontlinersnl#1
You can see the test results here: https://github.com/Inforitnl/growthbook-c-sharp/actions/runs/6698308487/job/18200066562?pr=1
And on this picture:

We can go 1 of 2 ways:

1. I can merge the PR#1 on our INFORIT branch, which will update this PR
2. You can merge this PR and then I will make a new one that will enable tests.

Just let me know and I'll make it happen 😄.

This will fix #17

[darklordzw]

@Mastermindzh, option #2 sounds good. I've merged this PR into main. Once the tests are ready, I'll update the secrets for the deploy step.

Thanks again for all your help!

[Mastermindzh]

No problem @darklordzw 😄.

Things were taking a while at our side so I decided to just do some stuff over the weekends/evenings to get the ball rolling.
Thanks for being so quick with reviews & merges.