feat: add upload img logic

src/main/resources/application.yml

@@ -1,5 +1,5 @@
 server:
-    port: 8080
+    port: 8081
 
 jwt:
   secret: CkmEXxVBNBsMUo4VNhDcH0YBhA1O4zSkQgSM243YzDY=
@@ -7,6 +7,8 @@ jwt:
   subject: Interesting
   expire: 604800
 
+upload:
+  dir: c:/uploads
 
 spring:
   servlet:
@@ -21,8 +23,6 @@ spring:
   jackson:
     time-zone: Asia/Shanghai
     date-format: yyyy-MM-dd HH:mm:ss
-
-
   mail:
     protocol: smtps
     port: 465