Merge pull request 'Added search state model' (#52) from midrandshop into master

Reviewed-on: #52

LiteCharms.Features/Models/SearchState.cs

@@ -0,0 +1,12 @@
+namespace LiteCharms.Features.Models;
+
+public class SearchState
+{
+    public string Query { get; private set; } = string.Empty;
+
+    public event Action? OnSearchSubmitted;
+
+    public void UpdateQuery(string newQuery) => Query = newQuery;
+
+    public void SubmitSearch() => OnSearchSubmitted?.Invoke();
+}