Add instrumentation request issue templates (#500)

Author: MrAlias

.github/ISSUE_TEMPLATE/instrumentation-request.md

@@ -0,0 +1,58 @@
+---
+name: Instrumentation Request
+about: Suggest instrumentation to include in this project
+title: Add Instrumentation for <package-name>
+labels: 'enhancement, area: instrumentation, release:after-ga'
+assignees: ''
+
+---
+
+## Background
+
+**Package Link**: <add link to package here>
+
+<describe how this package is commonly used>
+
+## Proposed Solution
+
+<add a high-level description of how instrumentation can wrap or hook-in to the package>
+
+### Tracing
+
+- attributes:
+  - <add proposed attributes or remove>
+- events:
+  - <add proposed events or remove>
+- links:
+  - <add proposed links or remove>
+
+### Metrics
+
+Instruments
+
+- <instrument name>: <describe what the instrument will measure>
+  - type: <propose instrument type information>
+  - unit: <propose instrument unit>
+  - description: <propose instrument description>
+  - attributes:
+    - <add proposed attributes or remove>
+
+### Prior Art
+
+- <list other established instrumentation for this package that can be referenced>
+
+## Tasks
+
+- Code complete:
+  - [ ] Comprehensive unit tests.
+  - [ ] End-to-end integration tests.
+  - [ ] Tests all passing.
+  - [ ] Instrumentation functionality verified.
+- Documented
+  - [ ] Added to the [OpenTelemetry Registry](https://opentelemetry.io/registry/)
+  - [ ] README included for the module describing high-level purpose.
+  - [ ] Complete documentation of all public API including package documentation.
+  - [ ] [Instrumentation documentation](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/master/instrumentation/README.md#instrumentation-packages) updated.
+- Examples
+  - [ ] `Dockerfile` file to build example application.
+  - [ ] `docker-compose.yml` to run example in a docker environment to demonstrate instrumentation.