Use the tool plugin to include photon-targeting into photon-core (#2137)

## Description

This allows photon-targeting to be loaded using the same mechanism as
the rest of the WPILib libraries, fixing issues with libraries not being
able to find and load their dependent libraries.

## Meta

Merge checklist:
- [x] Pull Request title is [short, imperative
summary](https://cbea.ms/git-commit/) of proposed changes
- [x] The description documents the _what_ and _why_
- [x] If this PR changes behavior or adds a feature, user documentation
is updated
- [ ] If this PR touches photon-serde, all messages have been
regenerated and hashes have not changed unexpectedly
- [ ] If this PR touches configuration, this is backwards compatible
with settings back to v2025.3.2
- [ ] If this PR touches pipeline settings or anything related to data
exchange, the frontend typing is updated
- [ ] If this PR addresses a bug, a regression test for it is added

photon-lib/src/test/java/org/photonvision/VisionSystemSimTest.java

@@ -28,7 +28,6 @@ import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.junit.jupiter.api.Assertions.fail;
 import static org.photonvision.UnitTestUtils.waitForSequenceNumber;
 
 import edu.wpi.first.apriltag.AprilTag;
@@ -44,6 +43,7 @@ import edu.wpi.first.math.geometry.Translation2d;
 import edu.wpi.first.math.geometry.Translation3d;
 import edu.wpi.first.math.util.Units;
 import edu.wpi.first.networktables.NetworkTableInstance;
+import edu.wpi.first.util.RuntimeLoader;
 import edu.wpi.first.wpilibj.smartdashboard.SmartDashboard;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -59,8 +59,7 @@ import org.junit.jupiter.params.provider.MethodSource;
 import org.junit.jupiter.params.provider.ValueSource;
 import org.photonvision.estimation.TargetModel;
 import org.photonvision.estimation.VisionEstimation;
-import org.photonvision.jni.PhotonTargetingJniLoader;
-import org.photonvision.jni.WpilibLoader;
+import org.photonvision.jni.LibraryLoader;
 import org.photonvision.simulation.PhotonCameraSim;
 import org.photonvision.simulation.VisionSystemSim;
 import org.photonvision.simulation.VisionTargetSim;
@@ -72,15 +71,9 @@ class VisionSystemSimTest {
     NetworkTableInstance inst;
 
     @BeforeAll
-    public static void setUp() {
-        assertTrue(WpilibLoader.loadLibraries());
-
-        try {
-            assertTrue(PhotonTargetingJniLoader.load());
-        } catch (UnsatisfiedLinkError | IOException e) {
-            e.printStackTrace();
-            fail(e);
-        }
+    public static void setUp() throws IOException {
+        assertTrue(LibraryLoader.loadWpiLibraries());
+        RuntimeLoader.loadLibrary("photontargetingJNI");
 
         OpenCvLoader.forceStaticLoad();
     }