Add a search feature powered by algolia

[GabLeRoux]

Is your feature request related to a problem? Please describe.
Right now, we cannot search through all documentation.

Describe the solution you'd like
We should be able to search for things like activation, android or IL2CPP and clicking on the result, we should navigate to the related documentation section. An example of this is on Fastlane's documentation website.

Additional context

• The search bar should be placed at the top of the website using antd's provided components

[zachesposito]

Hello I would like to take care of this issue

[webbertakken]

Great @zachesposito,

Please go ahead and let us know if you need any additional info or help.

We're also on discord if you like to discuss things more quickly.

[webbertakken]

Removing assignment as there is no fork. Feel free to assign yourself when you start

[davidmfinol]

@webbertakken #97 is still open, but I think we can close this since you've done the initial implementation, right?

[webbertakken]

Yea agreed.