add PR template

.github/pull_request_template.md

@@ -0,0 +1,22 @@
+<!-- If you are submitting a dataset or a model for the model registry please use the corresponding checklists below otherwise feel free to remove them. -->
+
+<!-- add additional description, question etc. related to the new dataset -->
+
+
+## Checklist
+<!-- Please do not delete this -->
+
+- [ ] Run tests locally to make sure nothing is broken using `make test`. 
+- [ ] Run the results files checker `make pre-push`.
+
+### Adding a model checklist
+<!-- 
+When adding a model to the model registry
+see also https://github.com/embeddings-benchmark/mteb/blob/main/docs/reproducible_workflow.md
+-->
+
+ - [ ] I have added model implementation to `mteb/models/` [directory](https://github.com/embeddings-benchmark/mteb/tree/main/mteb/models). Instruction to add a model can be found [here](https://github.com/embeddings-benchmark/mteb/blob/main/docs/reproducible_workflow.md)
+ - [ ] I have ensured that my model can be loaded using
+   - [ ] `mteb.get_model(model_name, revision)` and
+   - [ ] `mteb.get_model_meta(model_name, revision)`
+ - [ ] I have tested the implementation works on a representative set of tasks.