Add migration guide to 3.15.0 release

docs/modules/ROOT/pages/migration-guide/3.15.0.adoc

@@ -0,0 +1,26 @@
+= Camel Quarkus 3.15.0 Migration Guide
+
+The following guide outlines how to adapt your code to changes that were made in Camel Quarkus 3.15.0.
+
+== Micrometer upgraded to 1.13.x
+
+Quarkus now aligns with Micrometer 1.13.x. Refer to the https://github.com/quarkusio/quarkus/wiki/Migration-Guide-3.14#micrometer[Quarkus migration guide] for more details.
+
+If you were previously using `io.micrometer:micrometer-registry-prometheus` in your application. This should be changed to `io.quarkus:quarkus-micrometer-registry-prometheus`.
+
+[source,xml]
+----
+<dependency>
+    <groupId>io.quarkus</groupId>
+    <artifactId>quarkus-micrometer-registry-prometheus</artifactId>
+</dependency>
+----
+
+== Deprecation of Kotlin extensions
+
+The following extensions have been deprecated and will be removed in a future release.
+
+* camel-quarkus-kotlin
+* camel-quarkus-kotlin-dsl
+
+This is in line with the Camel core deprecation of `camel-kotlin-dsl`.

docs/modules/ROOT/pages/migration-guide/index.adoc

@@ -4,6 +4,7 @@ We do frequent releases, a release almost every month, and even though we strive
 
 Listed here are guides on how to migrate between major versions and anything of significance to watch for when upgrading from minor versions.
 
+* xref:migration-guide/3.15.0.adoc[Camel Quarkus 3.14.x to Camel Quarkus 3.15.0 migration guide]
 * xref:migration-guide/3.2.0.adoc[Camel Quarkus 2.x to Camel Quarkus 3.2.0 migration guide]
 * xref:migration-guide/2.11.0.adoc[Camel Quarkus 2.10.0 to Camel Quarkus 2.11.0 migration guide]
 * xref:migration-guide/2.10.0.adoc[Camel Quarkus 2.9.0 to Camel Quarkus 2.10.0 migration guide]