Add implementation for new JNI functions in Valhalla

[hangshao0]

There are 3 new JNI functions added in Valhalla:

JNIEXPORT jboolean JNICALL
JVM_IsImplicitlyConstructibleClass(JNIEnv *env, jclass cls)

JNIEXPORT jboolean JNICALL
JVM_IsNullRestrictedArray(JNIEnv *env, jobject obj)

JNIEXPORT jarray JNICALL
JVM_NewNullRestrictedArray(JNIEnv *env, jclass cls, jint length)

OpenJ9 needs to add implementation for them.

1. Support for JVM_IsImplicitlyConstructibleClass()
   We just need to check the ImplicitCreation attribute added in New ImplicitCreation Attribute in project Valhalla #17234

2. Support for JVM_IsNullRestrictedArray() and JVM_NewNullRestrictedArray()
   Currently, each J9Class has a pointer to its arrayClass and J9arrayClass has a pointer to leafComponentType.
   We need to create 2 array classes for null-restricted value type. One nullable array class and one null restricted array class. The exiting J9Class->arrayClass can be used as nullable arrayClass. We can create a new field in J9Class called nullrestrictedArrayClass, and let it point to null restricted array class(which is created by JVM_NewNullRestrictedArray()). We can use a bit in J9ArrayClass->classFlags to indicate if it is null restricted array (prohibiting storing null to its element). The implementation of JVM_IsNullRestrictedArray() can check this bit. The implementation of JVM_NewNullRestrictedArray() might follow the example JVM_NewArray().

[hangshao0]

@theresa-m