[FEATURE] Create an integration architecture to add providers

[nevo-david]

Description

Create an integration architecture to add providers such as Slack, Intercom, Whatsapp, Etc.
There should be:

1. a new item on the menu called Integration.
2. on click, you should have an integration list. Once clicked, you will be redirected to an oAuth2 login to add the app.
3. Database architecture to save the new provider.
4. Put limitations on the pricing.

Screenshots

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Additional information

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