Better OAuth implementation for datasource/airbyte

[NaderRNA]

implement better OAuth for some datasources to use "Log In With ..." instead of requiring users to find their OAuth token.

[NaderRNA]

Implement passport.js strategies for:

• Hubspot
• Salesforce
• Snowflake
• Google Drive
• Google Sheets
• airtable
• Slack
• Zendesk Support
• Xero
  (maybe more in future)

[NaderRNA]

Passport.js currently supports the following strategies:

• Hubspot
• Google (not sure if this supports drive and sheets)
• Slack
• Zendesk
• Xero

It DOESN'T support the following:

• Salesforce
• Snowflake
• Airtable

I think I'll need to create custom strategies to OAuth the rest of them in #617