Second pass on Metamask Snap

Chore

What we need to achieve and who for

[ ] Metamask can handle SVG now ... does that help us?
[ ] Metamask can handle URLs now ... does that help us?
[ ] Can we optimise the flow of new user >> snap >> vega wallet?
- [ ] Is there a way to prompt / steer exporting their private key from MM and uploading to Vega Wallet?
- [ ] Should we alternatively be somehoe prompting them to create a new Vega Wallet and send funds there (to avoid uploading their main MM seed phrase to a new network)?
[ ] Should we make use of their homepage function? If we could route them to here we could:
- [ ] Show people all their MM keys
- [ ] Promote moving to the Vega Wallet
- [ ] Provide some docs around that
[ ] Can we include something in the TX receipt to prompt people? Either to go to the hompage or to the Vega Wallet?
[ ] Anything else we can try to improve?