Add config validate Template

[hypery2k]

Provide job template for config validation:

check errors like this:

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "extends": [
    "packages:eslint",
    "packages:linters",
    "packages:stylelint",
    "packages:test",
    "packages:tslint",
    "packages:angularjs",
    "packages:react",
    "packages:vite"
  ],
  "packageRules": [
    {
      "matchDatasources": ["npm"],
      "registryUrls": [
        "https://nexus.brunata-huerth.de/repository/npm/"
      ]
    },
    // replace conflicting peer dependencies in conflict case
    {
      "description": "Use replace for peer deps",
      "matchDepTypes": ["peerDependencies"],
      "rangeStrategy": "replace"
    },
    {
      "groupName": "All Playwright Packages",
      "matchManagers": [
        "npm",
        "docker"
      ],
      "matchPackageNames": [
        "/playwright/",
        "/mcr.microsoft.com/playwright/",
        "/@playwright/"
      ]
    }
  ]
}

Preset packages:angularjs does not work

[linear]

OSS-54