docs: restructure local-dev and rename to tooling

[Rugvip]

Thoughts on this restructure? I though it might be a bit clearer. Moved it down as well since I don't think it needs to be as far up.

Other names considered:

• Dev Tooling
• Development Tools
• CLI Tools

[backstage-goalie]

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
example-backend-legacy	packages/backend-legacy	none	v0.2.99-next.1
@backstage/cli-node	packages/cli-node	patch	v0.2.6-next.0

[camilaibs]

This is nice, left minor comments 🎉

[github-actions]

Uffizzi Ephemeral Environment - Virtual Cluster

Your cluster pr-24816 was successfully created. Learn more about Uffizzi virtual clusters
To connect to this cluster, follow these steps:

1. Download and install the Uffizzi CLI from https://docs.uffizzi.com/install
2. Login to Uffizzi, then select the backstage account and project:

uffizzi login

Select an account: 
  ‣ backstage
    jdoe

Select a project or create a new project: 
  ‣ backstage-6783521

3. Update your kubeconfig: uffizzi cluster update-kubeconfig pr-24816 --kubeconfig=[PATH_TO_KUBECONFIG]
   After updating your kubeconfig, you can manage your cluster with kubectl, kustomize, helm, and other tools that use kubeconfig files: kubectl get namespace --kubeconfig [PATH_TO_KUBECONFIG]

Access the backstage endpoint at https://backstage-default-pr-24816-c5641.uclusters.app.uffizzi.com

[github-actions]

Thank you for contributing to Backstage! The changes in this pull request will be part of the 1.28.0 release, scheduled for Tue, 18 Jun 2024.