feat: integrated fixes for #70, #90, #93, #96

[Samuel1-ona]

• Implement root Makefile for project orchestration (Create Makefile or task runner for common commands #93)
• Add Docker and docker-compose configurations for local development (Add Docker and docker-compose for local development #96)
• Migrate toast notifications to sonner and ensure global usage (Add toast notifications for transaction feedback #90)
• Add advanced filtering and pagination to Event Discovery page (Add event discovery and search page #70)

closes #70, closes #90, closes #93, closes #96

Description

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Fixes #(issue)

Type of Change

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• 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)
• Documentation update
• Code refactoring
• Performance improvement
• Test coverage improvement

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• I have performed a self-review of my code
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• 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

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