chore: add GitHub issue templates (bug report + feature request)

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,24 @@
+name: Feature Request
+description: Suggest a new feature or improvement
+labels: ["enhancement"]
+body:
+  - type: input
+    id: version
+    attributes:
+      label: Current version
+      description: "Run `twitter --version` or `pip show twitter-cli | grep Version`"
+      placeholder: "e.g. 0.6.0"
+    validations:
+      required: false
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the feature
+      description: What would you like to see added or changed?
+    validations:
+      required: true
+  - type: textarea
+    id: use_case
+    attributes:
+      label: Use case
+      description: Why do you need this feature? How would you use it?