Mocked contract calls and a connected wallet for Playwright Tests

[elliotBraem]

Is your feature request related to a problem? Please describe.

In order to thoroughly test our UI, we need to introduce capability for a connected wallet (or mock) and contract calls. For example,

• The "Create Community" button requires context.accountId to not be null.
• Community configuration requires a connected wallet and needs to check permissions from the contract.

Describe the solution you'd like

The ability to mock specific scenarios, such as when a wallet is not connected, a wallet is connected with permissions, and without permissions.

Describe alternatives you've considered

Haven't done deep dive into it, but this looks relevant:

• Configuring storageState
• Browser context; but we need to be able to init different contexts for specific tests.
• Requests