添加基地后端handler和logic

server/sql/baseoverview.sql

@@ -0,0 +1,13 @@
+CREATE TABLE baseoverview (
+                              id INT NOT NULL AUTO_INCREMENT,
+                              introduction longtext,
+                              regulations longtext,
+                              address varchar(255),
+                              phone varchar(20),
+                              email varchar(100),
+                              website varchar(100),
+                              director varchar(255),
+                              deputy_director varchar(255),
+                              researchers varchar(255),
+                              PRIMARY KEY (id)
+);