refactor(appbase): SMTPConfigView改用libaes内置版本并修复R8混淆崩溃

- APPExcetionMailSettingsActivity引用改为cc.winboll.studio.libaes.views.SMTPConfigView
- 删除libappbase自定义SMTPConfigView
- appbase添加JavaMail依赖(android-mail/android-activation 1.6.7)
- proguard-rules保留javax.mail.**修复NoClassDefFoundError
- packagingOptions排除重复META-INF文件

appbase/build.gradle

@@ -44,6 +44,12 @@ android {
          sourceCompatibility JavaVersion.VERSION_1_7
          targetCompatibility JavaVersion.VERSION_1_7
      }
+     packagingOptions {
+         exclude 'META-INF/LICENSE.md'
+         exclude 'META-INF/LICENSE.txt'
+         exclude 'META-INF/NOTICE.md'
+         exclude 'META-INF/NOTICE.txt'
+     }
 }
 
 dependencies {
@@ -53,6 +59,9 @@ dependencies {
     //api 'cc.winboll.studio:libappbase:15.20.+'
     api 'cc.winboll.studio:libaes:15.20.21'
     api 'androidx.appcompat:appcompat:1.3.1'
+    // JavaMail SMTP (Android兼容版)
+    api 'com.sun.mail:android-mail:1.6.7'
+    api 'com.sun.mail:android-activation:1.6.7'
 	
     api fileTree(dir: 'libs', include: ['*.jar'])
 }