Inject json/xml/yaml syntax highlighting via language=* comment

[fbricon]

Inspired by #3397, I basically search/replace'd sql with json.

String JSON = /* language=json */ 
      """
        {
          "xml.filePathSupport.mappings": [
            {
              "expressions": [
                {
                  "xpath": "*/@somepath",
                  "filter": [".txt"]
                },
                {
                  "xpath": "path/text()",
                  "separator":":"
                }
              ],
              "pattern": "**/*.xml"
            }
          ]
        }
      """;

renders as:

Don't ask me to make any changes to the grammar, I'm textmate illiterate ;-)

[fbricon]

For good measure, I also added XML support:

String XML = /* language=xml */ 
"""
  <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
  
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>my-project</artifactId>
    <version>1.0</version>
  </project>
""";

renders as:

and YAML support:

String YAML = /* language=yaml */ 
"""
  name: GitHub Actions Demo
  run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
  on: [push]
  jobs:
    Explore-GitHub-Actions:
      # Comments work too
      runs-on: ubuntu-latest
      steps:
        - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
        - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
        - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
        - name: Check out repository code
          uses: actions/checkout@v4
        - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
        - run: echo "🖥️ The workflow is now ready to test your code on the runner."
        - name: List files in the repository
          run: |
            ls ${{ github.workspace }}
        - run: echo "🍏 This job's status is ${{ job.status }}."
""";

renders as:

[hopehadfield]

Works as expected and code looks good to me.