refactor: Remove all Elasticsearch dependencies and code

- Remove quarkus-elasticsearch-rest-client dependency
- Remove elasticsearch-java dependency
- Remove elasticsearch.version property
- Delete ElasticsearchConfig.java
- Delete SearchDocument.java
- Delete SearchIndexService.java
- Delete IndexingException.java
- Simplify ProjectEventHandler (remove search indexing)
- Replace Lombok with manual getters in ProjectUpdateEvent
- Fix compilation errors and clean up unused imports

The application now focuses on core functionality without Elasticsearch complexity.
All traces of Elasticsearch have been completely removed from the codebase.

pom.xml

@@ -19,7 +19,7 @@
     <quarkus.platform.version>3.7.3</quarkus.platform.version>
     <lombok.version>1.18.32</lombok.version>
     <jackson.version>2.17.0</jackson.version>
-    <elasticsearch.version>8.12.2</elasticsearch.version>
+
     <guava.version>33.0.0-jre</guava.version>
     <jakarta.mail.version>2.1.3</jakarta.mail.version>
 
@@ -133,16 +133,7 @@
       <version>${jakarta.mail.version}</version>
     </dependency>
 
-    <!-- Elasticsearch -->
-    <dependency>
-      <groupId>io.quarkus</groupId>
-      <artifactId>quarkus-elasticsearch-rest-client</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>co.elastic.clients</groupId>
-      <artifactId>elasticsearch-java</artifactId>
-      <version>${elasticsearch.version}</version>
-    </dependency>
+
 
     <!-- Utilitaires -->
     <dependency>