Integrate minimal wallet connect implementation

[TimDaub]

Scope

• Currently, messages can only be signed with metamask as it's the only provider inserted into the page
• However, e.g. on mobile e.g. WalletConnect would be required

Deliverable

• Give user two buttons "Connect with MM", "Connet with Wallet Connect"
• To implement WalletConnect, find the most minimal footprint integration. DON'T just dump an arbitrary NPM package in the dependencies. Try to make the wallet connect integration as small in size as possible
• Before committing as PR, see consensus here in the issue

time estimate

• estimate includes familiarizing oneself with wallet connect and the component's structure
• checking for the most minimal approach towards implementation
• doing the actual work
• 4h