Added issue template

Author: dhondta

.github/ISSUE_TEMPLATE/add-encoding.yml

@@ -0,0 +1,21 @@
+name: Add new encoding
+description: Propose a new encoding to be added
+title: "Add new encoding: [codec]"
+labels: ["enhancement"]
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: Describe the encoding, its purpose, and how it works
+      placeholder: Provide a clear and concise description
+    validations:
+      required: true
+  - type: input
+    id: reference
+    attributes:
+      label: Reference
+      description: Provide a reference URL for the encoding
+      placeholder: https://
+    validations:
+      required: false

.github/workflows/python-package.yml

@@ -93,7 +93,7 @@ jobs:
       uses: ad-m/github-push-action@master
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
-        branch: ${{ github.ref }}
+        branch: main
   deploy:
     runs-on: ubuntu-latest
     needs: [prepare, coverage]