fix(connect): can not select files on the connection form VSCODE-658

[alenakhineika]

Description

Electron 32.0 removed support for the path property of the Web File object in favor of the webUtils.getPathForFile method (electron blog). We can not import dialog and webUtils from 'electron' in the sandboxed webview microsoft/vscode#235284. To work around this, we use a custom dialog provider that uses webview APIs to send a message to the extension process to open the electron file dialog and listen for the response to get the file path and send them to the electron file input backend.

Checklist

• New tests and/or benchmarks are included
• Documentation is changed or added
• I have signed the MongoDB Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)

Motivation and Context

• Bugfix
• New feature
• Dependency update
• Misc

Types of changes

• Backport Needed
• Patch (non-breaking change which fixes an issue)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to change)