chore: Add add via=badge parameter to made with webstudio (#5245)

## Description

So we can know how well this is working

## Steps for reproduction

1. click button
2. expect xyz

## Code Review

- [ ] hi @kof, I need you to do
  - conceptual review (architecture, feature-correctness)
  - detailed review (read every line)
  - test it on preview

## Before requesting a review

- [ ] made a self-review
- [ ] added inline comments where things may be not obvious (the "why",
not "what")

## Before merging

- [ ] tested locally and on preview environment (preview dev login:
0000)
- [ ] updated [test
cases](https://github.com/webstudio-is/webstudio/blob/main/apps/builder/docs/test-cases.md)
document
- [ ] added tests
- [ ] if any new env variables are added, added them to `.env` file

Author: kof

packages/sdk/src/core-templates.tsx

@@ -363,7 +363,7 @@ const builtWithWebstudioMeta: TemplateMeta = {
     <ws.element
       ws:tag="a"
       ws:label="Built with Webstudio"
-      href="https://webstudio.is"
+      href="https://webstudio.is?via=badge"
       target="_blank"
       ws:style={css`
         display: inline-flex;