docs: add docs for Microsoft Power Automate integration

[daveomri]

Adds comprehensive documentation for integrating Apify with Microsoft Power Automate.

• New docs for Power Automate connector (triggers, actions, async patterns, troubleshooting)

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Note

Adds a new docs page for integrating Apify with Microsoft Power Automate, covering setup, available triggers/actions, and patterns for long-running runs.

• New guide sources/platform/integrations/workflows-and-notifications/power-automate.md with connector overview and key capabilities
• Details OAuth 2.0 auth, connection setup, pick lists, input JSON, and where to find IDs
• Documents triggers (Actor run finished, Task run finished) and actions (Run Actor, Run task, Get dataset items, Get key-value store record, Scrape single URL)
• Explains async patterns for long-running scrapes (webhook-based and polling), with referenced images
• Includes best practices, example use cases, troubleshooting, FAQs, and note on x-apify-integration-platform header and manual webhook cleanup

^{Written by Cursor Bugbot for commit 5ac0b47. Configure here.}

[usanvict]

Currently, all the screenshots reflect the Czech UI of Power Automate, even though the rest of the documentation is in English. Please, take a look on that.