Add SQLite persistence to restore and continue previous conversations

pom.xml

@@ -42,6 +42,23 @@
             <version>4.2.0</version>
         </dependency>
 
+        <!-- Database -->
+        <dependency>
+            <groupId>org.xerial</groupId>
+            <artifactId>sqlite-jdbc</artifactId>
+            <version>3.45.1.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.hibernate.orm</groupId>
+            <artifactId>hibernate-community-dialects</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+
         <!-- Test support -->
         <dependency>
             <groupId>org.springframework.boot</groupId>