feat: Update model profile and statistics tracking

- Updated model profile to support new cost parameters: costPerCachedInToken and costPerReasoningOutToken.
- Enhanced AgentRequestStatistic to track cached input tokens and reasoning output tokens.
- Modified CompletionStatistics to include cached input tokens and reasoning output tokens.
- Updated AzureAiClient, CachedClient, and other clients to handle new statistics fields.
- Introduced Timings class to capture detailed timing metrics for requests.
- Adjusted Usage class to include input and output token details.
- Updated properties files to include new cost parameters for cached and reasoning tokens.

src/main/java/de/extio/lmlib/profile/ModelProfile.java

@@ -14,7 +14,9 @@ public record ModelProfile(
 		String url,
 		String apiKey,
 		BigDecimal costPerInToken,
+		BigDecimal costPerCachedInToken,
 		BigDecimal costPerOutToken,
+		BigDecimal costPerReasoningOutToken,
 		String reasoningEffort,
 		String reasoningSummaryDetails,
 		String category) {