Add .cursorignore file to ignore .genaiscript, node_modules, and built directories

[pelikhan]

• A new file .cursorignore is created. ⭐ 🆕
• There are three directories added to the .cursorignore file, which are:
  • .genaiscript/ 📄
  • node_modules/ 📦
  • built/ 🛠️
• This indicates that these directories are being ignored by the cursor actions. Essentially, any files in these directories will be ignored by some processes (like search or Git operations). 🙈
• It seems to be a way to optimize the processes by reducing the scope of files to scan or operate upon. 🚀
• Note: There's no newline at the end of the file. End of file newlines are good to give a clear termination to the file and helps certain utilities processing them without any issue. ℹ️

Just to clarify, there are no changes in the user-facing API ("packages/core/src/prompt_template.d.ts" and "packages/core/src/prompt_type.ts") present in the GIT_DIFF provided. 👌

generated by pr-describe