chore: add go.mod, issue templates, and contributing guide

.github/ISSUE_TEMPLATE/bug.yml

@@ -0,0 +1,32 @@
+name: Bug Report
+description: Report a bug or unexpected behavior
+labels: ["bug"]
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: What happened?
+      description: A clear description of the bug.
+    validations:
+      required: true
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected behavior
+      description: What did you expect to happen?
+    validations:
+      required: false
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: Steps to reproduce
+      description: How can we reproduce this?
+    validations:
+      required: false
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: OS, Go version, kernel version, Firecracker version, etc.
+    validations:
+      required: false