fix(ios): fix startPosition, cropStart and cropEnd to handle float values correctly (#3589)

* refactor(ios): refactor setPlaybackRange function

* fix(ios): fix props to handle float values correctly

- fix startPosition, cropStart, cropEnd

* refactor(ios): apply lint

ios/Video/DataStructures/VideoSource.swift

@@ -5,7 +5,7 @@ struct VideoSource {
     let isAsset: Bool
     let shouldCache: Bool
     let requestHeaders: [String: Any]?
-    let startPosition: Int64?
+    let startPosition: Float64?
     let cropStart: Int64?
     let cropEnd: Int64?
     // Custom Metadata
@@ -51,9 +51,9 @@ struct VideoSource {
         } else {
             self.requestHeaders = nil
         }
-        self.startPosition = json["startPosition"] as? Int64
-        self.cropStart = json["cropStart"] as? Int64
-        self.cropEnd = json["cropEnd"] as? Int64
+        self.startPosition = json["startPosition"] as? Float64
+        self.cropStart = (json["cropStart"] as? Float64).flatMap { Int64(round($0)) }
+        self.cropEnd = (json["cropEnd"] as? Float64).flatMap { Int64(round($0)) }
         self.title = json["title"] as? String
         self.subtitle = json["subtitle"] as? String
         self.description = json["description"] as? String