add pr template

.github/pull_request_template.md

@@ -0,0 +1,12 @@
+<!---
+Before adding a new provider, there's a few general guidelines as to what providers would be accepted into the repo, primarily around trustworthiness and legitimacy:
+
+1. Is the provider a legitimate company?
+2. Does the provider provide a proper API service?
+   For example, reverse engineering services such as Claude Code, Codex, GitHub Copilot, Qwen Code, etc are not considered appropriate for this list.
+3. Does the provider have a business model?
+4. Does the provider provide legitimate services?
+   For example, providing commercial models such as Anthropic or OpenAI models for free or at steep discounts can suggest questionable business practices, such as chatbot reverse engineering, API credit resale/theft, or other similar practices.
+
+These guidelines are not exhaustive, but attempts to put into writing what sort of providers might be included in the list.
+--->