add location logging, display last location on map

Signed-off-by: Nicolas Froger <nicolas@kektus.xyz>

summer2024-backend/src/main/resources/db/migration/V1.2.0__AddLocation.sql

@@ -0,0 +1,7 @@
+create table Location
+(
+    id        bigserial not null primary key,
+    latitude  float4,
+    longitude float4,
+    timestamp timestamp(6) with time zone
+);