#90 Feature/setup ci cd

Closes #90

Setup runner and GCP

Also did config for #91

if it's sufficient, this MR could also close #89 and #91

backend/src/config/config.json

@@ -3,7 +3,7 @@
     "username": "postgres",
     "password": "postgres",
     "database": "ppl_development",
-    "host": "34.69.41.145",
+    "host": "127.0.0.1",
     "port": "5432",
     "dialect": "postgres"
   },
@@ -19,7 +19,7 @@
     "username": "postgres",
     "password": "postgres",
     "database": "ppl_production",
-    "host": "127.0.0.1",
+    "host": "34.69.41.145",
     "port": "5432",
     "dialect": "postgres"
   }