🌱 Group resources in tilt

[fabriziopandini]

What this PR does / why we need it:
This PR plays on a feature recently added in tilt that allows us to to group resources in the tilt dashboard see https://blog.tilt.dev/2021/08/09/resource-grouping.html.

I'm currently providing two different grouping strategies:

• by controllers and local binaries
• by provider

~~ The tricky part is that in order to get this to work nicely, we should change current default provider names, and this requires a small change to tilt_settings.json on the developer side ~~ (fixed)

I also have to investigate if this works with older releases...

@CecileRobertMichon @vincepri @sbueringer opinions?

[CecileRobertMichon]

+1, kubernetes-sigs/cluster-api-provider-azure#1668 is doing something similar in CAPZ

[k8s-ci-robot]

@fabriziopandini: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-verify	b842a39	link	/test pull-cluster-api-verify

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[fabriziopandini]

with this PR Tilt UI now looks like:

A small change in provider's tilt-provider.json file is required to make them to plugin nicely in this UX - see changes in the doc -; however if this does not happen or users are in older versions of tilt, the UX acts mostly as of today.

[sbueringer]

Looks great!
I don't really know enough about Tiltfile syntax, but it looks correct and as it works:
/lgtm

[vincepri]

/approve
/lgtm

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[killianmuldoon]

/lgtm

Works great on my tilt setup!