Use extensions bundles instead of installing individual extensions

[soninaren]

The flexibility provided by installing and managing exact extension versions comes at a cost to the non .NET developer experience. Extension bundles can be a compromise that gives up some flexibility but drastically simplifies the use of platform features that rely on extensions.

[soninaren]

related issue on core tools
Azure/azure-functions-core-tools#367

[paulbatum]

Hey @soninaren can you start adding the breakdown for this work to the issue?

[soninaren]

Have added a few related issues. Will be adding more.

• Handle extension bundling related configuration #3710
• Add logic for locating bundles at probing locations #3711
• Download the extension bundle if it is not present at the default location #3961
• Load extensions from the extension bundle location #3714 must have
• Set up the extension manager endpoints to resolve the extensions from extension bundle. #4061 must have
• Add API for exposing templates and binding metadata #3712 should have
• Add binding metadata and templates to extensions #3713 good to have
• Create a build for generating extension bundle #3715 good to have

[fabiocav]

@soninaren I've moved this to the appropriate milestone.

You can update the original description with links to the child issues once you have them.