Update repositories.yaml file and add a Devfile

[l0rd]

What does this PR do?

Updated the following repos:

"https://github.com/eclipse/che-docs" ==> "https://github.com/eclipse-che/che-docs"
"https://github.com/eclipse/che-plugin-broker" ==> "https://github.com/eclipse-che/che-plugin-broker"
"https://github.com/eclipse/che-website" ==> "https://github.com/eclipse-che/che-website"

Added the following repos:

https://github.com/eclipse-che/blog
https://github.com/eclipse-che/che-docs-vale-style
https://github.com/eclipse-che/che-release
https://github.com/che-incubator/che-deploy-action
https://github.com/che-incubator/devfile-converter
https://github.com/che-incubator/happy-path-tests-action
https://github.com/che-incubator/header-rewrite-traefik-plugin
https://github.com/che-incubator/jetbrains-editor-images
https://github.com/che-incubator/kubernetes-image-puller-operator
https://github.com/devfile/devworkspace-operator
https://github.com/devfile/registry
https://github.com/devfile/developer-images
https://github.com/devfile/devworkspace-operator-docs

And a simple devfile:

schemaVersion: 2.1.0
metadata:
  name: che
attributes:
  controller.devfile.io/storage-type: ephemeral
components:
- name: devtools
  container:
    image: quay.io/mloriedo/universal-developer-image:ubi8-latest
    memoryLimit: 4G
    memoryRequest: 256Mi
    cpuLimit: 500m
    cpuRequest: 30m

Screenshot/screencast of this PR

What issues does this PR fix or reference?

N/A

[benoitf]

Hello, you'll have to run https://github.com/eclipse/che/blob/main/.repositories-update-contributing.sh

to update CONTRIBUTING.md file reflecting these changes

[l0rd]

CONTRIBUTING.md Updated and checks are successful. Merging the PR.