Introduce Finder interface for boot 3.0 upgrade

Author: fabapp2

components/sbm-recipes-boot-upgrade/src/main/java/org/springframework/sbm/boot/upgrade_27_30/checks/DatabaseDriverGaeFinder.java

@@ -29,8 +29,9 @@
 import java.util.stream.Stream;
 
 @Component
-public class DatabaseDriverGaeFinder {
+public class DatabaseDriverGaeFinder implements Sbm30_Finder<Set<ApplicationModule>> {
 
+    @Override
     @NotNull
     public Set<ApplicationModule> findMatches(ProjectContext context) {
         return context.getApplicationModules()

components/sbm-recipes-boot-upgrade/src/main/java/org/springframework/sbm/boot/upgrade_27_30/checks/Sbm30_Finder.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2021 - 2022 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.sbm.boot.upgrade_27_30.checks;
+
+import org.jetbrains.annotations.NotNull;
+import org.springframework.sbm.build.api.ApplicationModule;
+import org.springframework.sbm.engine.context.ProjectContext;
+
+import java.util.Set;
+
+public interface Sbm30_Finder<T> {
+    @NotNull <T> T findMatches(ProjectContext context);
+}