docs: usage with Vue (#1519)

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### Description

showcase usage with Vue2 

Resolves or fixes issue: <!-- ✍️ Add GitHub issue number in format
`#0000` or `none` -->

### AI Tool Disclosure

- [x] My contribution does not include any AI-generated content
- [ ] My contribution includes AI-generated content, as disclosed below:
  - AI Tools: `[e.g. GitHub CoPilot, ChatGPT, JetBrains Junie etc.]`
- LLMs and versions: `[e.g. GPT-4.1, Claude Haiku 4.5, Gemini 2.5 Pro
etc.]`
- Prompts: `[Summarize the key prompts or instructions given to the AI
tools]`

### Affirmation

- [x] My code follows the
[CONTRIBUTING.md](https://github.com/CycloneDX/cyclonedx-webpack-plugin/blob/main/CONTRIBUTING.md)
guidelines

---------

Signed-off-by: Jan Kowalleck <jan.kowalleck@gmail.com>

Author: jkowalleck

README.md

@@ -123,6 +123,11 @@ See an example here: [integration with Angular17/webpack5](https://github.com/Cy
 _React_ uses _webpack_ under the hood. Therefore, it is possible to integrate this plugin.  
 See an example here: [integration with React18/webpack5](https://github.com/CycloneDX/cyclonedx-webpack-plugin/tree/master/tests/_testbeds/webpack5-react18).
 
+### Use with Vue
+
+_Vue_ uses _webpack_ under the hood. Therefore, it is possible to integrate this plugin.  
+See an example here: [integration with Vue2/webpack5](https://github.com/CycloneDX/cyclonedx-webpack-plugin/tree/master/tests/_testbeds/webpack5-vue2-cli-service).
+
 ## Internals
 
 This _webpack_ plugin utilizes the [CycloneDX library][CycloneDX-javascript-library] to generate the actual data structures.