Some snackbars (from Edit/Delete/Create buttons) are managed by
notistack and they stopped working (they're z-index seemed to be lower
than the other items, which prevented clicking them) when
@material-ui/core and /lab were updated.

This patch fixes that by updating notistack.

Vultr Kubernetes Engine support

Fix authorization and update K8s APi versioning

The v1beta1 version of this API is not longer available in some versions
of K8s, so we try both v1beta1 and v1.

We want to support different K8s API versions, and sometimes all they
differ in is the version and/or the group used in the API call.

In order to make this change seamless, this patch adapts the API
factory methods, to support multiple group/version/resource arguments,
and use the next one in the list if there's been an 404 error
accessing them.
i.e. if the first API group/version/resource attempted fails with 404,
it may be because the API version is deprecated, so it will try the
next one in the list. This should have no effect in other cases of 404
errors, since it always ends up sending the lsat 404 error found if
none of the calls is successful.

It's useful to be able to cancel a stream when there's an error, so
let's include the cancel function as a parameter when calling the error
callback.

Sometimes it was overwriting the list of both roles and cluster roles
with just one type, because of how the state was being set.

This is not needed and will be easier to perform upcoming changes
without it.

Fix render issues and add more modules to pluginLib

headlamp-plugin: Make the package arg of the build command optional

- print bash commands for easier debugging
- improve build test, so it runs headlamp-plugin build

build(deps): bump nth-check from 2.0.0 to 2.0.1 in /app

Bumps [nth-check](https://github.com/fb55/nth-check) from 2.0.0 to 2.0.1.
- [Release notes](https://github.com/fb55/nth-check/releases)
- [Commits](https://github.com/fb55/nth-check/compare/v2.0.0...v2.0.1

)

---
updated-dependencies:
- dependency-name: nth-check
  dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>

Provide patch functionality

This patch also adds Resource to classList so that it can be exported
to plugins

We want to render the plugins details component only when the resource
prop changes

A patch request accepts a json-patch type body and thus we need the
concrete type of JSON PATCH body which is provided by the dependency
@types/json-patch, this patch also adds the patch methods to apiFactory.
We also change the error handling by the request method to not directly
throw it but instead return a error wrapped in Promise.reject

Additionally we stop using --link inside test-headlamp-plugin.sh
so that it tests more closely what users will run. Previously this
would hang when using npm v7.

There's an issue with npm v7 looping on dependencies.

We rely on just calling the "headlamp-plugin build" command without
any arguments, but the build command expected a positional argument as
required, so the default and advised case for building plugins was
failing.

plugin: Pass apiProxy and recharts to pluginLib

apiProxy contains a lot of helper methods to directly interact with the
apiServer which will come in handy for the plugins to use.

Update plugin types

Add facility to override details view

We want to allow functionality in plugins such that we can append more
details view into a particular specified details view. This patch adds
a registerDetailsView method to acheive that and uses redux store to
handle attached details view.

backend: better way of determining the URL scheme