docs: add issue templates (#195)

* docs: add issue templates

* refactor: mention show and tell

.github/ISSUE_TEMPLATE/bug.yml

@@ -0,0 +1,39 @@
+name: Bug Report
+description: Report your bugs with the theme here!
+labels: [bug]
+body:
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue outlining your problem?
+      description: Please search to see if an issue already exists for your problem.
+      options:
+        - label: I have searched the existing issues and they do not solve my problem.
+          required: true
+  - type: textarea
+    attributes:
+      label: Describe your problem.
+      description: Also tell us, what do you expect to see?
+      placeholder: The battery charging icon is missing...
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Paste your configuration.
+      description: Provide us with the contents of your `.tmux.conf` file.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Attach screenshots.
+      description: If applicable, attach screenshots which clearly highlight the issue.
+  - type: input
+    attributes:
+      label: What tmux version are you seeing the issue on?
+      description: "You can find your version by running `tmux -V`"
+      placeholder: tmux 3.3a
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Any additional comments?
+      description: Add any information that hasn't been covered in the previous sections!