add boilerplate files

Author: connortsui20

.gitignore

@@ -0,0 +1,13 @@
+# Contains compiled files and executables.
+debug/
+target/
+
+# These are backup files generated by rustfmt.
+**/*.rs.bk
+
+# Ignore any database files.
+**/*.db
+
+# We will check in all code-generated entity files, as newer versions of `sea-orm-cli` might
+# conflict with previous versions.
+# **/entities