Allow people to login to the web app via wallet

[mihai169]

Integrate wallet authentication via Web3 providers (MetaMask, WalletConnect, Coinbase Wallet, etc) to Eliza UI.

Feature: Wallet-Based User Authentication
As a user
I want to log in using my cryptocurrency wallet
So that I can access and interact with AI agents securely

Scenario: Successful Wallet Login
Given I am on the login page
When I connect my wallet using "MetaMask"
And I approve the authentication request
Then I should be logged in successfully
And I should see my profile dashboard

Scenario: Wallet Authentication Rejection
Given I am on the login page
When I connect my wallet using "WalletConnect"
And I reject the authentication request
Then I should see an error message "Authentication failed"
And I should not be logged in

Scenario: Unsupported Wallet Attempt
Given I am on the login page
When I try to connect my wallet using "UnsupportedWallet"
Then I should see an error message "Wallet not supported"
And I should not be logged in