Proof Of Concept initial

Adds initial files for a proof-of-concept project, including Dockerfile, .gitignore, project files, and MQTT-related services.

This commit sets up the basic structure and configuration for exploring and validating the core concepts of the project.

Source/ProofOfConcept/Services/MessageProcessor.cs

@@ -1,20 +1,31 @@
+using Microsoft.Extensions.Caching.Memory;
+using Microsoft.Extensions.Options;
+
 namespace ProofOfConcept.Services;
 
-public class MessageProcessor
+public interface IMessageProcessor
 {
-    private ILogger<MessageProcessor> logger;
+    Task ProcessMessage(string jsonMessage);
+}
+
+public class MessageProcessor : IMessageProcessor
+{
+    private readonly ILogger<MessageProcessor> logger;
     private MessageProcessorConfiguration configuration;
 
-    public MessageProcessor(ILogger<MessageProcessor> logger, IOptionsMonitor<MessageProcessorConfiguration> options)
+    private readonly IMemoryCache memoryCache;
+
+    public MessageProcessor(ILogger<MessageProcessor> logger, IOptions<MessageProcessorConfiguration> options, IMemoryCache memoryCache)
     {
         this.logger = logger;
-        this.configuration = options.CurrentValue;
+        this.configuration = options.Value;
 
-        options.OnChange(newValue =>
-        {
-            this.configuration = newValue;
-            logger.LogInformation("Configuration of {ClassName} changed", nameof(MessageProcessor));
-        });
+        this.memoryCache = memoryCache;
+    }
+    
+    public async Task ProcessMessage(string jsonMessage)
+    {
+        this.logger.LogTrace("Processing message from Tesla: {Message}", jsonMessage);
     }
 }