Add project files.

Beam.Dynamic/DataBindings.cs

@@ -0,0 +1,32 @@
+using HtmlAgilityPack;
+
+namespace Beam.Dynamic {
+    public class DataBindings {
+        public Binding? Title { get; set; }
+        public Binding? Authors { get; set; }
+        public Binding? Description { get; set; }
+        public Binding? Content { get; set; }
+        public Binding? Language { get; set; }
+        public Binding? Tags { get; set; }
+
+        public ResolvedBindings Resolve(HtmlDocument doc) {
+            return new ResolvedBindings() {
+                Title = Title?.Resolve(doc),
+                Authors = Authors?.Resolve(doc) ?? Array.Empty<string>(),
+                Language = Language?.Resolve(doc) ?? Array.Empty<string>(),
+                Content = Content?.Resolve(doc),
+                Description = Description?.Resolve(doc),
+                Tags = Tags?.Resolve(doc) ?? Array.Empty<string>()
+            };
+        }
+    }
+
+    public class ResolvedBindings {
+        public string? Title { get; set; }
+        public string[]? Authors { get; set; }
+        public string? Description { get; set; }
+        public string? Content { get; set; }
+        public string[]? Language { get; set; }
+        public string[]? Tags { get; set; }
+    }
+}