Update configuration files to use new Database options structure

Co-authored-by: kamilbaczek <74410956+kamilbaczek@users.noreply.github.com>

Author: Copilot

Chapter-3-microservice-extraction/Fitnet.Contracts/Src/Fitnet.Contracts/appsettings.Development.json

@@ -8,8 +8,8 @@
   "FeatureManagement": {
     "Contracts": true,
   },
-  "ConnectionStrings": {
-    "Contracts": "Host=postgres:5432;Database=fitnet;Username=postgres;Password=mysecretpassword"
+  "Database": {
+    "ConnectionString": "Host=postgres:5432;Database=fitnet;Username=postgres;Password=mysecretpassword"
   },
   "EventBus": {
     "Uri": "rabbitmq",

Chapter-3-microservice-extraction/Fitnet.Contracts/Src/Fitnet.Contracts/appsettings.json

@@ -9,8 +9,8 @@
   "FeatureManagement": {
     "Contracts": true,
   },
-  "ConnectionStrings": {
-    "Contracts": ""
+  "Database": {
+    "ConnectionString": ""
   },
   "ExternalEventBus": {
     "Uri": "localhost",

Chapter-3-microservice-extraction/Fitnet/Src/Fitnet/appsettings.Development.json

@@ -11,10 +11,8 @@
     "Passes": true,
     "Reports": true
   },
-  "ConnectionStrings": {
-    "Passes": "Host=postgres:5432;Database=fitnet;Username=postgres;Password=mysecretpassword",
-    "Reports": "Host=postgres:5432;Database=fitnet;Username=postgres;Password=mysecretpassword",
-    "Offers": "Host=postgres:5432;Database=fitnet;Username=postgres;Password=mysecretpassword"
+  "Database": {
+    "ConnectionString": "Host=postgres:5432;Database=fitnet;Username=postgres;Password=mysecretpassword"
   },
   "EventBus": {
     "Uri": "rabbitmq",

Chapter-3-microservice-extraction/Fitnet/Src/Fitnet/appsettings.json

@@ -17,10 +17,8 @@
       "Enabled": true
     }
   },
-  "ConnectionStrings": {
-    "Passes": "",
-    "Reports": "",
-    "Offers": ""
+  "Database": {
+    "ConnectionString": ""
   },
   "EventBus": {
     "Uri": "localhost",