Fix test failures and add automated testing workflow

[SkowronskiAndrew]

Summary

This PR fixes failing tests in the UnityDataTool.Tests project and adds a GitHub Actions workflow to run tests
automatically on commits and pull requests.

The tests weren't being run automatically and recent PRs broke UnityDataTools in a case that was actually detected by existing tests.

Changes

1. Bug Fix: Duplicate SQL Schema Creation

File: Analyzer/Resources/AssetBundle.sql

Problem: The test Analyze_PlayerData_DatabaseCorrect was failing with:
SQLite Error 1: 'view asset_view already exists'

Root Cause: Both AssetBundleHandler and AddAssetDependency command were executing the same SQL schema from
Resources.AssetBundle, causing views to be created twice. While tables used CREATE TABLE IF NOT EXISTS
(idempotent), views used plain CREATE VIEW which failed on the second execution.

Fix: Changed view creation to use CREATE VIEW IF NOT EXISTS for:

• asset_view (line 11)
• asset_dependencies_view (line 17)

This makes the SQL schema idempotent and safe to execute multiple times.

Test Results: All 116 tests in UnityDataTool.Tests now pass ✅

2. GitHub Actions Test Workflow

File: .github/workflows/test.yml

Added automated testing that:

• Runs on push to main and on pull requests
• Tests on the same OS/architecture matrix as the build workflow:
  • Windows x64
  • macOS arm64

3. Documentation

Added initial documentation for AI assistants working in this codebase (as generated by CLAUDE.md).

This is also useful for humans.

Testing

Verified locally on Windows x64

And new GitHub action ran and both platforms passed.