Updated `eslint` to latest 8.x and `@ionic/eslint-config` to latest
(0.4.0), which is required for eslint 8.x to work.
Removed `eslint-plugin-import` and `@typescript-eslint/eslint-plugin`
since they are part of `@ionic/eslint-config`
Issue number: internal
---------
This does a couple things:
**1 - Adds a `sync` command to get the latest `core` build in
`angular-server`**
The release process for `angular-server` failed
[here](https://github.com/ionic-team/ionic-framework/actions/runs/9686982182/job/26730689874).
This failure was only made apparent because the Lerna command
[here](52ff0505e8/.github/workflows/actions/publish-npm/action.yml (L35))
runs prior to building each package.
This should have been caught by CI on the [update to @stencil/core to
v4.19.0](https://github.com/ionic-team/ionic-framework/pull/29666), but
the `angular-server` package is the only package that doesn't sync
`core` before it builds. This PR adds a `sync` command so that
`angular-server` will use the latest core build during the normal build
action.
**2 - Resolving types errors in `angular-server`**
After properly syncing `core` in `angular-server` using the command
added, running build fails with the following:
<img width="400px" alt="Screenshot 2024-06-27 at 1 16 15 PM"
src="https://github.com/ionic-team/ionic-framework/assets/6577830/68d74750-821b-4776-b563-124d8fa06a79">
This was a regression in Stencil. `@stencil/core` has been updated to
resolve these errors so the build passes.
