refactor: reorganize modules and add Linux build tooling

module/base/sender/proto/mail.proto

@@ -0,0 +1,21 @@
+syntax = "proto3";
+package sender;
+option go_package=".;sender";
+
+// Mail method
+service Mail {
+  rpc Send(SendMailRequest) returns (SendMailReply);
+}
+
+// sms module
+message SendMailRequest {
+  string provider =1;
+  string template_key = 2;
+  string to = 4;
+  bool is_gen_code = 5; // 是否生成验证码
+  map<string,string> paramters=6; // 验证码相关
+}
+
+message SendMailReply {
+  string data = 1;
+}