Add Mongoose support

Add the OpenTelemetry instrumentation for Mongoose and add a test
app that checks for the span generated by it.

.changesets/add-mongoose-support.md

@@ -0,0 +1,6 @@
+---
+bump: "patch"
+type: "add"
+---
+
+Add Mongoose support

.semaphore/semaphore.yml

@@ -73,6 +73,9 @@ blocks:
     - name: Koa + MySQL
       commands:
       - script/integration_test_app koa-mysql
+    - name: Express + Mongoose
+      commands:
+      - script/integration_test_app express-mongoose
     - name: Express + Postgres
       commands:
       - script/integration_test_app express-postgres

build_matrix.yml

@@ -69,6 +69,9 @@ semaphore: # Default `.semaphore/semaphore.yml` contents
         - name: Koa + MySQL
           commands:
             - script/integration_test_app koa-mysql
+        - name: Express + Mongoose
+          commands:
+            - script/integration_test_app express-mongoose
         - name: Express + Postgres
           commands:
             - script/integration_test_app express-postgres