[Instrumentation.EntityFrameworkCore] Add component owners

Add component owners for OpenTelemetry.Instrumentation.EntityFrameworkCore.

Resolves open-telemetry#888.

Author: martincostello

.github/component_owners.yml

@@ -35,6 +35,9 @@ components:
     - g7ed6e
   src/OpenTelemetry.Instrumentation.ElasticsearchClient/:
     - ejsmith
+  src/OpenTelemetry.Instrumentation.EntityFrameworkCore/:
+    - martincostello
+    - matt-hensley
   src/OpenTelemetry.Instrumentation.EventCounters/:
     - hananiel
     - mic-max

src/OpenTelemetry.Instrumentation.EntityFrameworkCore/README.md

@@ -2,8 +2,8 @@
 
 | Status        |           |
 | ------------- |-----------|
-| Stability     |  [Beta](../../README.md#beta)|
-| Code Owners   ||
+| Stability     | [Beta](../../README.md#beta) |
+| Code Owners   | [@martincostello](https://github.com/martincostello), [@matt-hensley](https://github.com/matt-hensley) |
 
 [![NuGet version badge](https://img.shields.io/nuget/v/OpenTelemetry.Instrumentation.EntityFrameworkCore)](https://www.nuget.org/packages/OpenTelemetry.Instrumentation.EntityFrameworkCore)
 [![NuGet download count badge](https://img.shields.io/nuget/dt/OpenTelemetry.Instrumentation.EntityFrameworkCore)](https://www.nuget.org/packages/OpenTelemetry.Instrumentation.EntityFrameworkCore)