Lint Create-eth instances with example extension

[rin-st]

Lint Create-eth instances with example extension when pushing to example branch or when creating PR to it

Similar to scaffold-eth/create-eth#316

PR is draft just to see it works since this is PR to example. See "actions" tab. After approved I'll create PR with the same gh action to main

Foundry is commented, waits for 1.3.2 fix

[rin-st]

Foundry is commented, waits for 1.3.2 fix

Uncommented, now it works too

[technophile-04]

After approved I'll create PR with the same gh action to main

Merging this to example as well 🙌, we can create one to main as well! Thanks Rinat!!