java: async-profiler: include method modifiers in name

[Jongy]

Method modifiers (ACC_* values such as static, public etc) are interesting and can provide useful insights for profile readers. It's easy to get them with jvmti->GetMethodModifiers.

For MVP, I'd like it this way:

• We add an option --java-include-method-modifiers, disabled by default.
• If above option is given, we pass a matching option to async-profiler (that we add in async-profiler) - includemm (mm for method modifiers).
• When includemm is given, we will call GetMethodModifiers and append the data to the frame name as a prefix, in a format that would match the way it was defined in the Java file. So if we got the modifiers ACC_PUBLIC, ACC_FINAL, ACC_STATIC - we will add public static final (maintain the same order as common in Java files), e.g public final String.replace(....); (just an example).
• When includemm is not in use, async-profiler's behavior should not be changed at all (i.e avoid calling any new methods unless necessary).