feat: establish backend foundation

.gitignore

@@ -3,6 +3,9 @@
 /node_modules
 /build
 
+# generated by `npx prisma generate`
+/generated
+
 # Logs
 logs
 *.log
@@ -20,7 +23,7 @@ lerna-debug.log*
 /.nyc_output
 
 # IDEs and editors
-/.idea
+.idea
 .project
 .classpath
 .c9/
@@ -54,3 +57,6 @@ pids
 
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# SQLite data
+prisma/*.db