Add `estimatedResults` in `SearchQuery`

lib/src/reverse_engineering/responses/search_page.dart

@@ -71,9 +71,9 @@ class SearchPage {
       return null;
     }
     return get(httpClient, queryString,
-          ctoken: initialData.continuation,
-          itct: initialData.clickTrackingParams,
-          xsrfToken: xsfrToken);
+        ctoken: initialData.continuation,
+        itct: initialData.clickTrackingParams,
+        xsrfToken: xsfrToken);
   }
 
   static Future<SearchPage> get(
@@ -106,8 +106,6 @@ class SearchPage {
 }
 
 class _InitialData {
-  //TODO: Add total result
-
   // Json parsed map
   final Map<String, dynamic> _root;
 
@@ -190,6 +188,8 @@ class _InitialData {
   String get clickTrackingParams => _clickTrackingParams ??=
       getContinuationContext(_root)?.getValue('clickTrackingParams') ?? '';
 
+  int get estimatedResults => int.parse(_root['estimatedResults'] ?? 0);
+
   dynamic _parseContent(dynamic content) {
     if (content == null) {
       return null;

lib/src/reverse_engineering/responses/video_info_response.dart

@@ -108,4 +108,4 @@ class _StreamInfo extends StreamInfoProvider {
 
   @override
   int get framerate => int.tryParse(_root['fps'] ?? '');
-}
+}

lib/src/search/related_query.dart

@@ -10,4 +10,4 @@ class RelatedQuery {
 
   /// Initialize a [RelatedQuery] instance.
   RelatedQuery(this.query, this.videoId);
-}
+}

lib/src/search/search_query.dart

@@ -41,4 +41,7 @@ class SearchQuery {
 
   /// Returns the queries related to this search.
   List<RelatedQuery> get relatedQueries => _page.initialData.relatedQueries;
+
+  /// Returns the estimated search result count.
+  int get estimatedResults => _page.initialData.estimatedResults;
 }

test/search_test.dart

@@ -19,8 +19,7 @@ void main() {
       expect(videos, isNotEmpty);
     });
     test('SearchYouTubeVideosFromPage', () async {
-      var searchQuery = await yt.search
-          .queryFromPage('hello');
+      var searchQuery = await yt.search.queryFromPage('hello');
       expect(searchQuery.content, isNotEmpty);
       expect(searchQuery.relatedVideos, isNotEmpty);
       expect(searchQuery.relatedQueries, isNotEmpty);