Add TypeScript without build option for direct TS execution with JS-Controller 4+

[Copilot]

This PR implements support for creating TypeScript adapters that run directly without transpilation, leveraging the native TypeScript execution feature added in JS-Controller 3.3 and now stable in JS-Controller 4.

Changes

New Adapter Type Option

Added "TypeScript (without build)" as a new language choice when creating adapters. This option is designed for installations running JS-Controller 4+ which support direct TypeScript execution.

Key Differences from Traditional TypeScript Adapters

Traditional TypeScript adapters:

• Require transpilation from src/ to build/
• Use "main": "build/main.js" in package.json
• Include build, watch, and prebuild npm scripts
• Package the transpiled build/ directory
• Generate both tsconfig.json and tsconfig.build.json

TypeScript (without build) adapters:

• Execute TypeScript files directly without transpilation
• Use "main": "src/main.ts" in package.json
• Replace build scripts with "check": "tsc --noEmit" for type validation
• Package the source src/ directory directly
• Generate only tsconfig.json (no build configuration needed)
• Smaller dependency footprint (no rimraf, no build-adapter)

Updated Templates

Modified all relevant template files to support the new mode:

• package.json: Conditional main entry point, files list, and npm scripts
• tsconfig.json: Updated comments and configuration for direct execution
• tsconfig.build.json: Not generated for TS-only adapters
• Source files: src/main.ts, src/main.test.ts, and type definitions generated correctly
• Test configuration: Mocha configured for direct TS execution
• ESLint: Custom configuration supports TS-only mode
• README: Documents the check script appropriately
• CI/CD: GitHub Actions workflow handles TS-only adapters

Template Generation & Testing

Added "TypeScriptWithoutBuild" to the automated template generation script with full linting and type-checking verification. All templates generate successfully and pass validation.

Example Generated Package.json

{
  "main": "src/main.ts",
  "files": ["src/", "admin{,/!(src)/**}/*.{html,css,png,svg,jpg,js}", ...],
  "scripts": {
    "check": "tsc --noEmit",
    "test:ts": "mocha --config test/mocharc.custom.json src/**/*.test.ts",
    "test": "npm run test:ts && npm run test:package",
    "lint": "eslint -c eslint.config.mjs ."
  }
}

Testing

• ✅ All existing tests pass (63 passing)
• ✅ New baseline test added for TS-only adapters
• ✅ Template generation verified with linting and type checking
• ✅ Generated adapters include correct file structure and configuration

Benefits

1. Faster development: No build step during development
2. Simpler setup: Fewer dependencies and build tools required
3. Modern workflow: Leverages JS-Controller 4's native TS support
4. Type safety: Still maintains full TypeScript type checking via tsc --noEmit

Closes #XXX

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add option to create a TS-only adapter (without transpilation)</issue_title> <issue_description>Now with JS-Controller 4 in stable, most installations should support this, which was added in TS 3.3.</issue_description>

<agent_instructions>This needs to be added to the "What type of adapter you want to generate". In this case no build step is needed and the package.json contains the "src/main.ts" directly. We the "build" npmjs script shall be replaced by a "check" script which executes tsc with -noEmit to just test all TS code. Also enhance the create_templates.ts/sh to also generate such an Adapter, test and lint it </agent_instructions>

Comments on the Issue (you are @copilot in this section)

Fixes ioBroker/create-adapter#889

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