use structed logging

src/server/StructuredLog.ts

@@ -0,0 +1,21 @@
+export enum LogSeverity {
+    DEBUG = 'DEBUG',
+    INFO = 'INFO',
+    WARN = 'WARN',
+    ERROR = 'ERROR',
+    FATAL = 'FATAL'
+}
+
+export function slog(eventType: string, description, data: any, severity = LogSeverity.INFO): void {
+    const logEntry = {
+        eventType: eventType,
+        description: description,
+        severity: severity,
+        data: data
+    };
+    if (process.env.GAME_ENV == 'dev') {
+        console.log(description)
+    } else {
+        console.log(JSON.stringify(logEntry));
+    }
+}