refactor: migrate Redis cache implementation to Valkey with enhanced configurability

Replaced Redis with Valkey as the caching backend across infrastructure and application modules. Updated configurations, templates, and health checks to reflect Valkey-specific parameters. Improved compatibility with enhanced configurability, including max memory and memory eviction policy settings.

backend/infrastructure/cache/valkey-cache/src/test/resources/logback-test.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <!-- Console Appender für Test-Ausgaben -->
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <!-- Cache-spezifische Logger -->
+    <logger name="at.mocode.infrastructure.cache" level="DEBUG" />
+
+    <!-- Performance Test Logger -->
+    <logger name="ValkeyDistributedCachePerformanceTest" level="INFO" />
+
+    <!-- Edge Cases Test Logger -->
+    <logger name="ValkeyDistributedCacheEdgeCasesTest" level="INFO" />
+
+    <!-- Resilience Test Logger -->
+    <logger name="ValkeyDistributedCacheResilienceTest" level="INFO" />
+
+    <!-- Configuration Test Logger -->
+    <logger name="ValkeyDistributedCacheConfigurationTest" level="INFO" />
+
+    <!-- Integration Test Logger -->
+    <logger name="ValkeyDistributedCacheIntegrationTest" level="INFO" />
+
+    <!-- Testcontainers Logger (reduziert Verbosity) -->
+    <logger name="org.testcontainers" level="WARN" />
+    <logger name="com.github.dockerjava" level="WARN" />
+
+    <!-- Valkey/Lettuce Logger (reduziert Verbosity) -->
+    <logger name="io.lettuce" level="WARN" />
+    <logger name="org.springframework.data.redis" level="WARN" />
+
+    <!-- Root Logger -->
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>