feat: Add button can see the password in login dialog.

src/stylesheet/Dark2.css

@@ -332,10 +332,21 @@ QDialog#loginForm QLineEdit {
     font-size: 26px;
 }
 
+QDialog#loginForm QWidget#LoginEditArea {
+    background: transparent;
+    min-height: 110px;
+    max-height: 110px;
+}
+
 QDialog#loginForm QLineEdit:enabled {
     background-color: #515151
 }
 
+QDialog#loginForm QToolButton#ShowPasswordButton{
+    qproperty-icon:url(":/icons/eye.png");
+    qproperty-iconSize:30px 30px;
+}
+
 QDialog#loginForm QToolButton#btnlogin {
     min-height: 100px;
     max-height: 100px;