Add native support for AArch64 / Apple M1

[breandan]

When I try using Multik on AArch64, I receive the following error:

Exception in thread "main" java.lang.UnsatisfiedLinkError: /private/var/folders/04/y1sqs1y9175ch5sx_ppttxgm0000gn/T/jni_multik12854356113291656660/libmultik_jni.dylib: dlopen(/private/var/folders/04/y1sqs1y9175ch5sx_ppttxgm0000gn/T/jni_multik12854356113291656660/libmultik_jni.dylib, 1): no suitable image found.  Did find:
	/private/var/folders/04/y1sqs1y9175ch5sx_ppttxgm0000gn/T/jni_multik12854356113291656660/libmultik_jni.dylib: mach-o, but wrong architecture
	/private/var/folders/04/y1sqs1y9175ch5sx_ppttxgm0000gn/T/jni_multik12854356113291656660/libmultik_jni.dylib: mach-o, but wrong architecture
	at java.base/jdk.internal.loader.NativeLibraries.load(Native Method)
	at java.base/jdk.internal.loader.NativeLibraries$NativeLibraryImpl.open(NativeLibraries.java:383)
	at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:227)
	at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:169)
	at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2383)
	at java.base/java.lang.Runtime.load0(Runtime.java:746)
	at java.base/java.lang.System.load(System.java:1857)
	at org.jetbrains.kotlinx.multik.jni.Loader.load(Loader.kt:54)
	at org.jetbrains.kotlinx.multik.jni.NativeEngine.<clinit>(NativeEngine.kt:26)
	at org.jetbrains.kotlinx.multik.default.DefaultEngine.<clinit>(DefaultEngine.kt:24)
	at org.jetbrains.kotlinx.multik.default.DefaultEngineProvider.getEngine(DefaultEngine.kt:12)
	at org.jetbrains.kotlinx.multik.api.Engine.loadEngine(Engine.kt:36)
	at org.jetbrains.kotlinx.multik.api.Engine.<clinit>(Engine.kt:67)
	at org.jetbrains.kotlinx.multik.api.Multik.getMath(Multik.kt:39)
...

Here is the output of ./gradlew --version in case it helps:

------------------------------------------------------------
Gradle 7.1
------------------------------------------------------------

Build time:   2021-06-14 14:47:26 UTC
Revision:     989ccc9952b140ee6ab88870e8a12f1b2998369e

Kotlin:       1.4.31
Groovy:       3.0.7
Ant:          Apache Ant(TM) version 1.10.9 compiled on September 27 2020
JVM:          15.0.2 (AdoptOpenJDK 15.0.2+7)
OS:           Mac OS X 10.16 x86_64

[Lundez]

+1 here 😄