Added more missing APIs

src/ElectronNET.API/API/Entities/FindInPageOptions.cs

@@ -0,0 +1,24 @@
+namespace ElectronNET.API.Entities
+{
+    /// <summary>
+    /// Options for <see cref="WebContents.FindInPageAsync"/>.
+    /// </summary>
+    public class FindInPageOptions
+    {
+        /// <summary>
+        /// Whether to search forward or backward, defaults to true.
+        /// </summary>
+        public bool? Forward { get; set; }
+
+        /// <summary>
+        /// Whether to begin a new text finding session with this request. Should be true
+        /// for initial requests, and false for subsequent requests. Defaults to false.
+        /// </summary>
+        public bool? FindNext { get; set; }
+
+        /// <summary>
+        /// Whether search should be case-sensitive, defaults to false.
+        /// </summary>
+        public bool? MatchCase { get; set; }
+    }
+}