feat tests

[mvhenten]

• Move demo to test
• fix(ci): ignore build/dist
• fix(ci): update biome config
• fix(ci): fix formatting
• Remove eslint config; we don't use eslint
• feat(ci): adding unit tests

[Copilot]

Pull request overview

This PR transitions the project from a demo-based structure to a proper test-driven approach, while also modernizing the tooling configuration. It removes the demo directory in favor of a dedicated test suite, updates Biome to version 2.3.8 with corresponding configuration changes, and removes the unused ESLint configuration.

Key Changes

• Introduces comprehensive unit tests for entity generation and decorator functionality
• Updates Biome from 1.9.4 to 2.3.8 with modernized configuration (VCS integration, assist actions)
• Removes demo directory and replaces it with a test directory containing TypeSpec test fixtures

Reviewed changes

Copilot reviewed 12 out of 15 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
test/tspconfig.yaml	New test configuration for TypeSpec compilation
test/main.tsp	TypeSpec test fixtures with entity and model definitions
test/entities.test.js	Comprehensive unit tests for Job and Person entities, covering attributes, decorators, and indexes
src/lib.ts	Import order formatting adjustment
src/index.ts	Export order formatting adjustment
src/emitter.ts	Updated biome-ignore comment explanation
src/decorators/$entity.ts	Removed unused NumericLiteral import
package.json	Updated test scripts and Biome version to 2.3.8
package-lock.json	Updated Biome dependencies to 2.3.8
biome.json	Migrated to Biome 2.x configuration schema with VCS support and assist actions
.gitignore	Added build and dist directories (dist was already present)
eslint.config.js	Removed entire ESLint configuration
demo/*	Removed demo directory files (tspconfig.yaml, package.json, index.ts)

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