feat: source-mntn contribution from Ella6882

[Ella6882]

What

This PR adds a new connector for source MNTN (source-mntn).

Contributor-provided connector description:

MNTN is a platform that lets brands of any size create and launch TV commercials on shows, movies, and live sports.

The contributor provided the following description of the change:

MNTN Streams include Campaign, CampaignDetails, Creative, CreativeDetails and Advertiser.

Details

Expand for list of spec properties and streams

Configuration

Input	Type	Description	Default Value
api_key	string	API Key.
start_time	string	start_time.	2023-01-01

Streams

Stream Name	Primary Key	Pagination	Supports Full Sync	Supports Incremental
CampaignDetails	ID	No pagination	✅	❌
CreativeDetails	ID.Day	No pagination	✅	✅
Campaign	ID.Day	No pagination	✅	✅
Creative	ID.Day	No pagination	✅	✅
Advertiser	ID.Day	No pagination	✅	✅

Reviewer checklist

• Consider how the connector handles pagination (docs).
• Help the contributor upload an icon that follows our icon design guidelines
• Click into the CI workflows that wait for a maintainer to run them, which should trigger CI runs

[octavia-bot]

Note

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