housekeeping: structure GitHub issues via templates (#5025)

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -0,0 +1,40 @@
+name: Bug Report
+description: Report a bug encountered while using Coder.
+labels: bug
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: What happened?
+      description: |
+        Please provide as much info as possible. Not doing so may result in your bug not being addressed in a timely manner.
+        If this matter is security related, please disclose it privately via https://coder.com/security
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: What did you expect to happen?
+    validations:
+      required: true
+
+#  - type: textarea
+#    id: repro
+#    attributes:
+#      label: How can we reproduce it (as minimally and precisely as possible)?
+#
+#  - type: textarea
+#    id: additional
+#    attributes:
+#      label: Anything else we need to know?
+#
+#  - type: textarea
+#    id: coderVersion
+#    attributes:
+#      label: Coder version
+#      value: |
+#        ```console
+#        $ coder version
+#        # paste output here
+#        ```

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Contact Sales
+    url: https://coder.com/demo
+    about: Request a demo of Coder Enterprise.

.github/ISSUE_TEMPLATE/enhancement.yml

@@ -0,0 +1,15 @@
+name: Enhancement
+description: Provide supporting details to request development of a feature.
+labels: enhancement
+body:
+  - type: textarea
+    id: feature
+    attributes:
+      label: What would you like to be added?
+    validations:
+      required: true
+
+  - type: textarea
+    id: rationale
+    attributes:
+      label: Why is this needed?

.github/ISSUE_TEMPLATE/external_bug_report.md

@@ -1,9 +0,0 @@
-<!--- Provide a general summary of the issue in the Title above -->
-
-## Expected Behavior
-
-<!--- Tell us what should happen -->
-
-## Current Behavior
-
-<!--- Tell us what happens instead of the expected behavior -->

.github/ISSUE_TEMPLATE/feedback.yml

@@ -0,0 +1,10 @@
+name: Feedback
+description: Share your experience with us.
+labels: feedback
+body:
+  - type: textarea
+    id: feature
+    attributes:
+      label: What would you like share?
+    validations:
+      required: true