增加了multi-tenant-core, multi-tenant-datasource ,未完全测试
diff --git a/multi-tenant-core/build.gradle b/multi-tenant-core/build.gradle
new file mode 100644
index 0000000..b456c6e
--- /dev/null
+++ b/multi-tenant-core/build.gradle
@@ -0,0 +1,9 @@
+plugins {
+    id 'java'
+    id 'org.springframework.boot'
+}
+
+dependencies {
+    implementation "org.springframework:spring-webmvc"
+    implementation "javax.servlet:javax.servlet-api:${javaxServletVersion}"
+}
\ No newline at end of file