Adds issue templates (#566)

Co-authored-by: Takeshi Yoneda <t.y.mathetake@gmail.com>
Signed-off-by: Anuraag Agrawal <anuraaga@gmail.com>

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,31 @@
+---
+name: Bug Report
+about: Create a report to help us improve wazero.
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Description of the host and wasm code that reproduces the behavior.
+Smoothest debugging will be if you can share a repository with the
+actual code.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Environment (please complete the relevant information):**
+- Go version: [e.g. 1.18.1]
+- wazero Version: [e.g. c815060196bbfaa2d0f66a6ddbe64ba026523944]
+- Host architecture: [e.g. amd64]
+- Runtime mode: [e.g. interpreter or compiler]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature-request.md

@@ -0,0 +1,20 @@
+---
+name: Feature Request
+about: Suggest an idea for wazero to support.
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.