Separate CLI from server and add compiler tests.

[maejima-fumika]

No description provided.

[Copilot]

Pull Request Overview

This PR separates the CLI functionality from the server package and adds comprehensive compiler tests. The refactoring restructures the project into a monorepo with separate CLI and server packages, where the server now exports only the compiler functionality as a library.

• Moves CLI commands from server to a dedicated CLI package
• Refactors the server package to export only compiler functionality as @bluescript/compiler
• Adds extensive test suite for the compiler with 15 test cases covering module imports, package system, and ESP-IDF components

Reviewed Changes

Copilot reviewed 18 out of 32 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tsconfig.base.json	Adds shared TypeScript configuration for the monorepo
server/tsconfig.json	Updates to extend base config and removes duplicated options
server/tests/compiler/compiler.test.ts	Adds comprehensive compiler test suite with 15 test scenarios
server/tests/compiler/compiler-test-utils.ts	Adds test utilities for compiler testing
server/src/index.ts	Changes from CLI entry point to library exports
server/src/compiler/compiler.ts	Refactors compiler implementation with improved error handling
server/package.json	Updates package metadata for library distribution
cli/src/index.ts	Moves CLI functionality from server package
cli/src/cli/run.ts	Updates imports to use new compiler package

Files not reviewed (1)

• cli/package-lock.json: Language not supported

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[Copilot]

Missing function call parentheses. Should be ${getErrorMessage(error)} instead of ${getErrorMessage}.

Suggested change

	throw new Error(`Failed to link: ${getErrorMessage}`, {cause: error});
	throw new Error(`Failed to link: ${getErrorMessage(error)}`, {cause: error});

[Copilot]

Corrected spelling of 'exit' to 'exist'.

Suggested change

	it('should throw error if a specified ESP-IDF component does not exit.', async () => {
	it('should throw error if a specified ESP-IDF component does not exist.', async () => {