undefined `prompt_tokens` on `openai_token` fix

[h1alexbel]

• deep && openai
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PR-Codex overview

This PR updates the logic in main.ts to prioritize deepinfra_token over openai. If deepinfra_token is provided, the type will be set to "deepinfra"; otherwise, it defaults to "openai".

Detailed summary

• Updated logic to prioritize deepinfra_token over openai
• Set type to "deepinfra" if deepinfra_token is provided
• Set type to "openai" if openai is provided but not deepinfra_token

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 3.32%. Comparing base (6cac108) to head (debd200).

Files	Patch %	Lines
src/main.ts	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #60 +/- ## ====================================== Coverage 3.32% 3.32% ====================================== Files 26 26 Lines 301 301 Branches 39 39 ====================================== Hits 10 10 Misses 291 291 ```

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