Replace litConnectModal with Wagmi

[anshss]

Description

As per this ticket, litConnectModal is now replaced with a more maintained wallet provider wagmi

Wagmi is chosen amongst other providers as most providers are built over wagmi and wagmi provides much more low-level control. It doesn't enforce any UI opinion and it have more granular error-handling capability

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Please include a summary of the changes and the related issue. Please also include relevant motivation and context. List any dependencies that are required for this change.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Tested in a browser app by testing with wallet other than metamask (disabled other wallets except trust wallet)

# Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[Ansonhkg]

1. Removing part of the existing code makes it a breaking change. Could you please revert the changes, set them as default, add a deprecation message, and allow users to opt for WAGMI if they choose to? This way, we can release this as a minor update.
2. Could we also figure out why it’s failing on the CI?