Improve automated rollout of JetBrains IDE's

[loujaybee]

We currently are raising a new PR [1] for each new JetBrains IDE configuration / version bump. This ticket is to investigate the possibility of improving the process, to ensure that we have the latest IDE's rolled out into production in an efficient, stable manner.

[corneliusludmann]

This especially makes sense when we introduce early-adopters versions (internal discussion). Proposal how this can be achieved:

• Make sure that the PRs are merged automatically. We need to figure out how this is possible without the needed reviews/approvals.
• Let the images be tagged as latest (e.g. here)
• Set ResolveImageDigest to true (similar to what we do for VS Code Insiders here)

[loujaybee]

Ideally we'll break this down. @akosyakov and @iQQBot have also discussed some plans for this work.

@iQQBot can you break this issue down into smaller issues and schedule them on the groundwork board?

[akosyakov]

I think it can be broke down to following issues:

• Provide EAP versions support which is built and delivered nightly similarly to VS Code Insiders. It should be an optional feature from user perspective, by default off.
• Enable smoke testing of the entire integration during the build including gateway and backend plugins. [jetbrains] integration testing cut-through #8507
• After that we can enable automatic upgrade for stable versions.
• And as the last add all JetBrains products supporting remote development.

[akosyakov]

@iQQBot I reopen it since the issue is auto rollout of all products.

The next step is to provide access to EAP (latest) versions for us from preferences.