feat: add Spring Boot application entry point and base configuration

src/main/java/com/slotline/SlotlineApplication.java

@@ -0,0 +1,15 @@
+package com.slotline;
+
+import com.slotline.config.SlotlineProperties;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+
+@SpringBootApplication
+@EnableConfigurationProperties(SlotlineProperties.class)
+public class SlotlineApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SlotlineApplication.class, args);
+    }
+}

src/main/resources/application.yml

@@ -0,0 +1,37 @@
+spring:
+  application:
+    name: slotline
+  datasource:
+    url: jdbc:h2:mem:slotline;DB_CLOSE_DELAY=-1;LOCK_TIMEOUT=10000
+    username: sa
+    password: ""
+    driver-class-name: org.h2.Driver
+  jpa:
+    open-in-view: false
+    hibernate:
+      ddl-auto: none
+    properties:
+      hibernate:
+        jdbc:
+          time_zone: UTC
+  flyway:
+    enabled: true
+    locations: classpath:db/migration/{vendor}
+
+slotline:
+  jwt:
+    secret: ${SLOTLINE_JWT_SECRET:dev-only-secret-change-me-0123456789-abcdefghij}
+    expiration: PT12H
+    issuer: slotline
+  admin:
+    username: ${SLOTLINE_ADMIN_USERNAME:admin}
+    password: ${SLOTLINE_ADMIN_PASSWORD:admin12345}
+
+springdoc:
+  swagger-ui:
+    path: /swagger-ui.html
+    operations-sorter: method
+
+logging:
+  level:
+    org.flywaydb.core: info