chore: add issue tempalte model_request.md (#212)

* chore: add issue tempalte model_request.md

* update label

.github/ISSUE_TEMPLATE/feature_request.md

@@ -10,6 +10,8 @@ assignees: ''
 Your issue may already be reported!
 Please search on the [issue tracker](https://github.com/sigoden/aichat/issues) before creating one.
 
+If you are requesting support for the new model, goto [model-request](https://github.com/sigoden/aichat/issues/new?assignees=&labels=enhancement&projects=&template=model_request.md&title=).
+
 **Is your feature request related to a problem? Please describe.**
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 

.github/ISSUE_TEMPLATE/model_request.md

@@ -0,0 +1,21 @@
+---
+name: Model Request
+about: Support a new LLM Model or AI Platform.
+title: ''
+labels: 'new model'
+assignees: ''
+
+---
+
+### Please confirm whether the following requirements are met:
+
+- [ ] Must have a REST/HTTP API.
+- [ ] Must be publicly accessible. It cannot require application review or have regional restrictions. A beta version is acceptable.
+- [ ] No open source. Open source models can be used through LocalAI and do not need to be supported separately.
+- [ ] Cannot be an agent/proxy of other platforms.
+
+### Please provide the following documents or links:
+
+- API Documentation (required)
+
+- TOKEN calculation document (optional)