code: usage example project

examples/usage_example/.gitignore

@@ -0,0 +1,19 @@
+**/config/local.yaml
+**/config/*.local.yaml
+**/config/production.yaml
+
+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+
+# include cargo lock
+!Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb
+
+*.sqlite