Add error handling and directory safety for type-map generation

[sangram-2003]

Problems:
No error handling
If folder doesn’t exist → crash
If write fails → silent failure
Directory may not exist
out path might not be created yet
Blocking I/O
writeFileSync blocks event loop (not ideal in tools)

made changes in plugins/processor.mjs
The current implementation writes type-map.json using writeFileSync without ensuring the output directory exists or handling potential errors.

This may cause the process to fail if the directory is missing or if file writing encounters an issue.

This PR improves robustness by:
Ensuring the output directory exists using mkdirSync with recursive option
Wrapping file writing in a try/catch block to prevent crashes and provide meaningful error logs

[linux-foundation-easycla]

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[avivkeller]

Can you change this to ensure the out directory at the beginning of execution, and revert everything else?

[ovflowd]

This change seems wrong. Why you're changing this?

[ovflowd]

Unrelated change.

[ovflowd]

Unrelated change.

[ovflowd]

Unrelated change.