registerClass static method support

[5andr0]

With this PR, registerClass supports static methods. This also fixes the bug of not being able to implement static interface methods or static superClass methods.

mkdex now has the ability to add additional access flags like ACC_STATIC to non-constructor methods https://source.android.com/docs/core/runtime/dex-format#access-flags

To make a static method, add isStatic: true in the method object:

Java.scheduleOnMainThread(() => 
{
  Java.registerClass({
    name: 'com.example.MyWeirdTrustManager',
    superClass: SomeBaseClass,
    implements: [X509TrustManager],
    fields: {},
    methods: {
      checkServerTrusted: [{
        isStatic: true,
        returnType: 'void',
        argumentTypes: ['[Ljava.security.cert.X509Certificate;', 'java.lang.String'],
        implementation(chain, authType) {
          console.log('checkServerTrusted A');
        }
      }],
    }
  }
});

I leave it up to you to update the docs and unit tests.

For some reason, when registering a class with static methods from the app start (frida -f) it has to be scheduled on the main thread. Otherwise there will be this error:

Error: java.lang.ClassNotFoundException: Didn't find class "com.example.MyWeirdTrustManager" on path: DexPathList[[],nativeLibraryDirectories=[/system/lib, /system_ext/lib]]
    at t.throwIfExceptionPending (frida/node_modules/frida-java-bridge/lib/env.js:124:1)
    at Proxy.<anonymous> (frida/node_modules/frida-java-bridge/lib/class-factory.js:502:1)
    at Proxy.value (frida/node_modules/frida-java-bridge/lib/class-factory.js:949:1)
    at Proxy.value (frida/node_modules/frida-java-bridge/lib/class-factory.js:954:1)
    at I._make (frida/node_modules/frida-java-bridge/lib/class-factory.js:165:1)
    at I.use (frida/node_modules/frida-java-bridge/lib/class-factory.js:62:1)
    at I.registerClass (frida/node_modules/frida-java-bridge/lib/class-factory.js:275:1)
    at _.registerClass (frida/node_modules/frida-java-bridge/index.js:283:1)

[5andr0]

@oleavr Please include this in the next release! You are doing an awesome job, keep it up!