Add test for spring starter native declarative config

[zeitlinger]

Blocked by open-telemetry/opentelemetry-java#7866

[zeitlinger]

@jack-berg it turns out that spring native needs the reflect-config.json added in this PR. I would propose we add this to the SDK directly, because everyone using declarative config with graal VM is going to have this issue.

[zeitlinger]

@jack-berg it turns out that spring native needs the reflect-config.json added in this PR. I would propose we add this to the SDK directly, because everyone using declarative config with graal VM is going to have this issue.

SDK already has other runtime hints so I created open-telemetry/opentelemetry-java#7866

Tested that it works with

Index: smoke-tests-otel-starter/spring-boot-3.2/build.gradle.kts
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/smoke-tests-otel-starter/spring-boot-3.2/build.gradle.kts b/smoke-tests-otel-starter/spring-boot-3.2/build.gradle.kts
--- a/smoke-tests-otel-starter/spring-boot-3.2/build.gradle.kts	(revision 78636198f5ce1b4d8d6aeed8fd91aba228bfb068)
+++ b/smoke-tests-otel-starter/spring-boot-3.2/build.gradle.kts	(date 1764007502573)
@@ -31,6 +31,13 @@
   }
 }
 
+// todo only for local testing, remove before merging
+configurations.configureEach {
+  resolutionStrategy {
+    force("io.opentelemetry:opentelemetry-sdk-extension-incubator:1.57.0-alpha-SNAPSHOT")
+  }
+}
+
 springBoot {
   mainClass = "io.opentelemetry.spring.smoketest.OtelSpringStarterSmokeTestApplication"
 }
Index: mise.toml
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/mise.toml b/mise.toml
--- a/mise.toml	(revision 78636198f5ce1b4d8d6aeed8fd91aba228bfb068)
+++ b/mise.toml	(date 1764006988344)
@@ -1,4 +1,5 @@
 [tools]
+java = "graalvm-community-25.0.1"
 lychee = "0.21.0"
 
 [settings]