Re-added "Implementation-Version" to the jars' manifest to determine Cryptomator version at runtime

main/pom.xml

@@ -292,6 +292,18 @@
 						</execution>
 					</executions>
 				</plugin>
+				<plugin>
+					<groupId>org.apache.maven.plugins</groupId>
+					<artifactId>maven-jar-plugin</artifactId>
+					<configuration>
+						<archive>
+							<manifest>
+								<!-- adds Implementation-Version which can be read during runtime -->
+								<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
+							</manifest>
+						</archive>
+					</configuration>
+				</plugin>
 				<plugin>
 					<groupId>org.jacoco</groupId>
 					<artifactId>jacoco-maven-plugin</artifactId>