feat(project): initialize Spring Boot weblog project with Gradle modules

weblog-module-admin/build.gradle.kts

@@ -0,0 +1,10 @@
+plugins {
+    java
+}
+
+dependencies {
+    // Test
+    testImplementation("org.springframework.boot:spring-boot-starter-test")
+
+    implementation(project(":weblog-module-common"))
+}