Move kotlin files into their own directory (#43)

build.gradle

@@ -3,7 +3,7 @@ plugins {
 }
 
 group 'com.viam'
-version '0.0.4'
+version '0.0.5-SNAPSHOT'
 
 repositories {
     google()

core/sdk/src/main/java/com/viam/sdk/core/resource/ResourceManager.java

@@ -54,7 +54,7 @@ public class ResourceManager implements Closeable {
         // register well-known subtypes
         // COMPONENTS
         Registry.registerSubtype(new ResourceRegistration<>(
-                Board.getSUBTYPE(),
+                Board.SUBTYPE,
                 BoardServiceGrpc.SERVICE_NAME,
                 BoardRPCService::new,
                 BoardRPCClient::new
@@ -78,7 +78,7 @@ public class ResourceManager implements Closeable {
                 GripperRPCClient::new
         ));
         Registry.registerSubtype(new ResourceRegistration<>(
-                Motor.getSUBTYPE(),
+                Motor.SUBTYPE,
                 MotorServiceGrpc.SERVICE_NAME,
                 MotorRPCService::new,
                 MotorRPCClient::new

core/sdk/src/main/java/com/viam/sdk/core/component/board/Board.kt → core/sdk/src/main/kotlin/com/viam/sdk/core/component/board/Board.kt

@@ -20,7 +20,7 @@ typealias Tick = StreamTicksResponse
  */
 abstract class Board(name: String) : Component(SUBTYPE, named(name)) {
     companion object {
-        @JvmStatic
+        @JvmField
         val SUBTYPE =
             Subtype(Subtype.NAMESPACE_RDK, Subtype.RESOURCE_TYPE_COMPONENT, "board")
 

core/sdk/src/main/java/com/viam/sdk/core/component/board/BoardRPCService.kt → core/sdk/src/main/kotlin/com/viam/sdk/core/component/board/BoardRPCService.kt

@@ -13,7 +13,7 @@ import java.util.*
 import kotlin.time.DurationUnit
 import kotlin.time.toDuration
 
-class BoardRPCService(private val manager: ResourceManager) : BoardServiceGrpc.BoardServiceImplBase(),
+internal class BoardRPCService(private val manager: ResourceManager) : BoardServiceGrpc.BoardServiceImplBase(),
     ResourceRPCService<Board> {
 
     override fun setGPIO(

core/sdk/src/main/java/com/viam/sdk/core/component/motor/Motor.kt → core/sdk/src/main/kotlin/com/viam/sdk/core/component/motor/Motor.kt

@@ -6,7 +6,6 @@ import com.viam.sdk.core.component.Component
 import com.viam.sdk.core.resource.Resource
 import com.viam.sdk.core.resource.Subtype
 import com.viam.sdk.core.robot.RobotClient
-import java.util.*
 
 /**
  * A [Motor] represents a physical motor
@@ -17,7 +16,7 @@ abstract class Motor(name: String) : Component(SUBTYPE, named(name)) {
     value class Properties(val positionReporting: Boolean)
 
     companion object {
-        @JvmStatic
+        @JvmField
         val SUBTYPE = Subtype(Subtype.NAMESPACE_RDK, Subtype.RESOURCE_TYPE_COMPONENT, "motor")
 
         /**

core/sdk/src/main/java/com/viam/sdk/core/component/motor/MotorRPCService.kt → core/sdk/src/main/kotlin/com/viam/sdk/core/component/motor/MotorRPCService.kt

@@ -8,7 +8,7 @@ import com.viam.sdk.core.resource.ResourceRPCService
 import io.grpc.stub.StreamObserver
 import java.util.*
 
-class MotorRPCService(private val manager: ResourceManager) : MotorServiceGrpc.MotorServiceImplBase(),
+internal class MotorRPCService(private val manager: ResourceManager) : MotorServiceGrpc.MotorServiceImplBase(),
     ResourceRPCService<Motor> {
 
     override fun setPower(