feat: Failing with the stacktrace when instrumentation post-processing fails. (#9639)

Before we had only that

```
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':dd-java-agent:instrumentation:caffeine:instrumentJava'.
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:130)
	...
Caused by: org.gradle.workers.internal.DefaultWorkerExecutor$WorkExecutionException: A failure occurred while executing InstrumentAction
	at org.gradle.workers.internal.DefaultWorkerExecutor$WorkItemExecution.waitForCompletion(DefaultWorkerExecutor.java:287)
	...
Caused by: java.lang.IllegalStateException: Failed to transform at least one type: [class datadog.trace.instrumentation.caffeine.BoundedLocalCacheInstrumentation:[java.lang.RuntimeException: java.lang.reflect.InvocationTargetException]]
	at ...
	at InstrumentingPlugin$1.onError(InstrumentingPlugin.groovy:58)
	at net.bytebuddy.build.Plugin$Engine$ErrorHandler$Compound.onError(Plugin.java:1455)
	at net.bytebuddy.build.Plugin$Engine$Listener$ForErrorHandler.onError(Plugin.java:2035)
	at net.bytebuddy.build.Plugin$Engine$Listener$Compound.onError(Plugin.java:2168)
```

Now we have the underlying failure as suppressed

```
	Suppressed: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
		at datadog.trace.agent.tooling.muzzle.MuzzleGenerator.wrap(MuzzleGenerator.java:69)
		at net.bytebuddy.asm.AsmVisitorWrapper$Compound.wrap(AsmVisitorWrapper.java:746)
		at net.bytebuddy.dynamic.scaffold.TypeWriter$Default$ForInlining$WithFullProcessing$RedefinitionClassVisitor.visit(TypeWriter.java:5027)
		at net.bytebuddy.jar.asm.ClassReader.accept(ClassReader.java:570)
		at net.bytebuddy.utility.AsmClassReader$ForAsm.accept(AsmClassReader.java:225)
		at net.bytebuddy.dynamic.scaffold.TypeWriter$Default$ForInlining.create(TypeWriter.java:4034)
		at net.bytebuddy.dynamic.scaffold.TypeWriter$Default.make(TypeWriter.java:2246)
		at net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase$UsingTypeWriter.make(DynamicType.java:4092)
		at net.bytebuddy.build.Plugin$Engine$Default$Preprocessor$Resolved.call(Plugin.java:5331)
		at net.bytebuddy.build.Plugin$Engine$Default$Preprocessor$Resolved.call(Plugin.java:5279)
		at net.bytebuddy.build.Plugin$Engine$Dispatcher$ForSerialTransformation.accept(Plugin.java:4204)
		at net.bytebuddy.build.Plugin$Engine$Default.apply(Plugin.java:5048)
		at net.bytebuddy.build.Plugin$Engine$apply$3.call(Unknown Source)
		at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
		at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
		at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:157)
		at InstrumentingPlugin.instrumentClasses(InstrumentingPlugin.groovy:53)
		at InstrumentingPlugin$instrumentClasses.call(Unknown Source)
		...
	Caused by: java.lang.reflect.InvocationTargetException
		at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
		at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
		at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
		at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
		at datadog.trace.agent.tooling.muzzle.MuzzleGenerator.wrap(MuzzleGenerator.java:67)
		... 55 more
	Caused by: java.lang.IllegalStateException: ConfigInversionMetricCollectorService has not been registered.
		at datadog.trace.api.telemetry.ConfigInversionMetricCollectorProvider.get(ConfigInversionMetricCollectorProvider.java:10)
		at datadog.trace.config.inversion.ConfigHelper.getEnvironmentVariable(ConfigHelper.java:126)
		at datadog.trace.bootstrap.config.provider.EnvironmentConfigSource.get(EnvironmentConfigSource.java:12)
		at datadog.trace.bootstrap.config.provider.ConfigProvider$Source.get(ConfigProvider.java:711)
		at datadog.trace.bootstrap.config.provider.ConfigProvider.get(ConfigProvider.java:257)
		at datadog.trace.bootstrap.config.provider.ConfigProvider.getBoolean(ConfigProvider.java:205)
		at datadog.trace.api.InstrumenterConfig.isIntegrationEnabled(InstrumenterConfig.java:341)
		at datadog.trace.agent.tooling.InstrumenterModule.<init>(InstrumenterModule.java:72)
		at datadog.trace.agent.tooling.InstrumenterModule$Tracing.<init>(InstrumenterModule.java:207)
		at datadog.trace.instrumentation.caffeine.BoundedLocalCacheInstrumentation.<init>(BoundedLocalCacheInstrumentation.java:19)
		... 60 more
```

Author: bric3

buildSrc/src/main/groovy/InstrumentingPlugin.groovy

@@ -49,7 +49,19 @@ class InstrumentingPlugin {
           .withErrorHandlers(
             Plugin.Engine.ErrorHandler.Enforcing.ALL_TYPES_RESOLVED,
             Plugin.Engine.ErrorHandler.Enforcing.NO_LIVE_INITIALIZERS,
-            Plugin.Engine.ErrorHandler.Failing.FAIL_LAST)
+            new Plugin.Engine.ErrorHandler() {
+              @Delegate
+              Plugin.Engine.ErrorHandler delegate = Plugin.Engine.ErrorHandler.Failing.FAIL_LAST
+
+              void onError(Map<TypeDescription, List<Throwable>> throwables) {
+                throw new IllegalStateException("Failed to transform at least one type: " + throwables).tap { ise ->
+                  throwables.values().flatten().each {
+                    ise.addSuppressed(it)
+                  }
+                };
+              }
+            }
+          )
           .with(Plugin.Engine.Dispatcher.ForSerialTransformation.Factory.INSTANCE)
           .apply(source, target, factories)