move helper files to runtime support

Author: madsodgaard

Package.swift

@@ -352,7 +352,10 @@ let package = Package(
     ),
     .target(
       name: "SwiftJavaRuntimeSupport",
-      dependencies: [],
+      dependencies: [
+        "CSwiftJavaJNI",
+        "SwiftJava"
+      ],
       swiftSettings: [
         .swiftLanguageMode(.v5),
         .unsafeFlags(["-I\(javaIncludePath)", "-I\(javaPlatformIncludePath)"])

Sources/JExtractSwiftLib/JNI/JNISwift2JavaGenerator+SwiftThunkPrinting.swift

@@ -465,6 +465,7 @@ extension JNISwift2JavaGenerator {
 
       import SwiftJava
       import CSwiftJavaJNI
+      import SwiftJavaRuntimeSupport
 
       """
     )

Sources/SwiftJava/Helpers/_JNIMethodIDCache.swift renamed to Sources/SwiftJavaRuntimeSupport/_JNIMethodIDCache.swift

@@ -12,6 +12,9 @@
 //
 //===----------------------------------------------------------------------===//
 
+import CSwiftJavaJNI
+import SwiftJava
+
 /// A cache used to hold references for JNI method and classes.
 ///
 /// This type is used internally in by the outputted JExtract wrappers