Added basic configuration

src/HopFrame.Core/Services/Implementations/ContextExplorer.cs

@@ -0,0 +1,24 @@
+using HopFrame.Core.Config;
+
+namespace HopFrame.Core.Services.Implementations;
+
+internal sealed class ContextExplorer(HopFrameConfig config) : IContextExplorer {
+    public IEnumerable<string> GetTableNames() {
+        foreach (var context in config.Contexts) {
+            foreach (var table in context.Tables) {
+                if (table.Ignored) continue;
+                yield return table.PropertyName;
+            }
+        }
+    }
+    
+    public TableConfig? GetTable(string name) {
+        foreach (var context in config.Contexts) {
+            var table = context.Tables.FirstOrDefault(table => table.PropertyName == name);
+            if (table is not null)
+                return table;
+        }
+
+        return null;
+    }
+}