Copy panel as SVG with embedded data

<!-- Please only use this template for submitting feature requests --> **Why is this needed**: We frequently reference grafana panels in our issue tracker and other communication tools. Usually we take a screenshot of the panel and share that screenshot. This was sufficient, but now that we're using LLMs more, LLMs are terrible at interpreting images of charts. So the LLM has no idea what we're talking about, and will have to go and try to re-create the query that was used in the chart and try to collect the data from the underlying data source directly (via an MCP tool call). This is very error prone, and produces the opposite problem where humans can't see what the LLM is looking at. Plus if the data expires from the backend data source, then it fails entirely. So we need a solution that works for both humans and the LLM. **What would you like to be added**: The idea to solve this is to add a "copy" button to the corner of each panel (or in the menu). When the button is clicked, it would copy the panel as an SVG, but also embed the raw data into it, along with other metadata, such as the dashboard, the panel, time ranges and other variables, the database query used, etc. Then when we post this anywhere, the humans can view the graphic, while the LLM can extract and view the data. While SVGs are generally well supported, there are some cases where they might not work well. Thus another option might be a PNG with embedded data. This would probably be harder to implement, so maybe better for a v2 of the implementation. I'm not sure what the metadata of PNGs looks like, but might be harder for the LLM as well. But if it's embedded as plain text, then it might be easy enough by using a well defined header and footer string that the LLM can just `grep` the data out. **Who is this feature for?** Anyone using LLMs. Or even anyone not using LLMs and just wants an easier mechanism to copy/paste panels than having to screenshot, open in editor, crop, copy.