refactor: massive rename dap -> dat

- Renamed packages io.shinhanlife.dap to io.shinhanlife.dat
- Renamed modules dap-was-* and dap-gateway to dat-was-* and dat-gateway
- Renamed classes DapGateway* to DatGateway*
- Updated all references

dat-tool-report/build.gradle

@@ -0,0 +1,17 @@
+plugins {
+    id 'org.springframework.boot'
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation 'com.fasterxml.jackson.core:jackson-databind:2.17.1'
+    implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.17.1'
+    implementation 'com.github.javaparser:javaparser-core:3.26.3'
+    implementation 'org.apache.poi:poi-ooxml:5.3.0'
+
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+}