Add `DatabaseManager` class and initialize database connection

- Introduced `DatabaseManager` class to manage database connections.
- Updated `MediaManagerApplication` to initialize `DatabaseManager` using configuration properties.

src/main/java/com/mediamanager/MediaManagerApplication.java

@@ -7,9 +7,12 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.util.Properties;
 
+import com.mediamanager.service.database.DatabaseManager;
+
 public class MediaManagerApplication {
     private static final Logger logger = LogManager.getLogger(MediaManagerApplication.class);
     private static Properties config;
+    private static DatabaseManager databaseManager;
 
     public static void main(String[] args) {
         logger.info("Starting MediaManager Core Application...");
@@ -17,6 +20,8 @@ public class MediaManagerApplication {
         try {
             // Load configuration
             loadConfiguration();
+            databaseManager = new DatabaseManager(config);
+            databaseManager.init();
 
             // TODO: Initialize database connection
             // TODO: Initialize IPC server with named pipes

src/main/java/com/mediamanager/service/database/DatabaseManager.java

@@ -0,0 +1,32 @@
+package com.mediamanager.service.database;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.util.Properties;
+
+
+public class DatabaseManager {
+    private final Properties configuration;
+    private Connection connection;
+    public DatabaseManager(Properties config) {
+        this.configuration = config;
+
+    }
+
+    public void init() throws Exception {
+        String databaseType = configuration.getProperty("database.type");
+        String databaseUrl = configuration.getProperty("database.url");
+        String databaseUsername = configuration.getProperty("database.username");
+        String databasePassword = configuration.getProperty("database.password");
+        String databasePort = configuration.getProperty("database.port");
+        String databaseName = configuration.getProperty("database.name");
+
+
+        String connectionString = String.format("jdbc:postgresql://%s:%s/%s", databaseUrl, databasePort, databaseName);
+        connection = DriverManager.getConnection(connectionString, databaseUsername, databasePassword);
+
+    }
+    public Connection getConnection() {
+        return connection;
+    }
+
+}