Add schemaregistry examples workspace with avro, json, and csfle examples (#70) (#114)

* Add schemaregistry examples workspace with avro, json, and csfle examples

* change file name

* Change schemaregistry name

* Add extra descriptor for constants

* Add content type by default

* Change to basic auth for most examples

Author: Claimundefine

.npmignore

@@ -6,6 +6,7 @@ deps/*
 Dockerfile
 deps/librdkafka/config.h
 schemaregistry
+schemaregistry-examples
 build
 .github
 .vscode