feat(ui): add connector presets

[PetrBulanek]

Summary

This PR adds support for managing connector presets directly in the UI. Available presets are now displayed, allowing users to connect or disconnect them without manually creating connectors.

Linked Issues

Closes: #1697

Documentation

• No Docs Needed:

[gemini-code-assist]

Summary of Changes

Hello @PetrBulanek, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly improves the user experience for managing connectors by introducing a new feature for connector presets. Instead of requiring users to manually input details for every connector, the UI now presents a curated list of available presets. Users can effortlessly connect or disconnect these predefined connectors, with the system intelligently handling the creation of new connectors when a preset is selected for the first time. This change streamlines the connector setup process, making it more intuitive and efficient.

Highlights

• Connector Presets UI: Introduced a new UI flow within the 'Add connector' modal, allowing users to browse and manage predefined connector presets, significantly streamlining the connector setup process.
• API Integration for Presets: Added new API functions (listConnectorPresets) and React Query hooks (useListConnectorPresets) to efficiently fetch and manage connector presets from the backend.
• Dynamic Connect/Disconnect Functionality: Implemented the ability to connect or disconnect a preset directly from the list, automatically handling the creation of a new connector if the preset is not yet added.
• Refactored Add Connector Modal: The AddConnectorModal was refactored to support switching between adding a custom connector and browsing presets, enhancing user experience and modularity.

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[gemini-code-assist]

Code Review

This pull request introduces a valuable feature for managing connector presets through the UI, allowing users to easily browse, connect, and disconnect them. The implementation is well-structured, with new components effectively separating concerns and a thoughtful refactoring of the AddConnectorModal to accommodate both preset browsing and custom connector creation. The code quality is high, but I've identified a few minor issues related to form validation logic, a user-facing loading message, and code organization that could be improved.

[PetrBulanek]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces a valuable feature by adding UI support for connector presets. The implementation is well-structured, creating new components for presets and refactoring the AddConnectorModal to handle both presets and custom connectors. I've identified a potential race condition in the ConnectPresetButton that could result in unintended duplicate actions, and I've provided suggestions to resolve it. Additionally, I have a minor recommendation for code organization to enhance maintainability. Overall, this is a solid contribution.