[KAIABridge] Added KAIABridge contracts

[hyunsooda]

Proposed changes

KAIABridge contracts and unit tests were added

@ian0371, @hyeonLewis Could you please review this implementation?

Types of changes

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• Bugfix
• New feature or enhancement
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• I have read the CONTRIBUTING GUIDELINES doc
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Further comments

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[hyeonLewis]

@hyunsooda Do you manually bring XXXUpgradable since adding contracts-upgradeable@5.0 package is broken due to missing peer dependency? They're currently importing lower version, which is strongly discouraged. I think we need to import contracts-upgradeable@5.0 if we want to keep maintaining all contracts in klayn (kaia).

[blukat29]

Hello, could you either (1) rebase against the latest dev or (2) git fetch --all && git cherry-pick 946bfe6? This will fix the CI failure.

[hyunsooda]

@ian0371, @hyeonLewis Updated based on your valuable comments. Please close if each issue is correctly patched

[ian0371]

please rebase

[CLAassistant]

All committers have signed the CLA.

[blukat29]

@hyunsooda Do not merge the dev. Please rebase against the latest dev.