Implemented state saving for resuming (WIP)

Code/Data/Paths.cs

@@ -9,6 +9,7 @@ namespace Flowframes.IO
 		public const string framesDir = "frames";
 		public const string interpDir = "interp";
 		public const string chunksDir = "vchunks";
+		public const string resumeDir = "resumedata";
 		public const string scenesDir = "scenes";
 		public const string alphaSuffix = "-a";
 

Code/Data/ResumeState.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Flowframes.Data
+{
+    public struct ResumeState
+    {
+        bool autoEncode;
+        int lastInterpolatedInputFrame;
+
+        public ResumeState (bool autoEncArg, int lastInterpInFrameArg)
+        {
+            autoEncode = autoEncArg;
+            lastInterpolatedInputFrame = lastInterpInFrameArg;
+        }
+
+        public override string ToString ()
+        {
+            string s = $"AUTOENC|{autoEncode}";
+
+            if (!autoEncode)
+            {
+                s += $"\nLASTINPUTFRAME|{lastInterpolatedInputFrame}";
+            }
+
+            return s;
+        }
+    }
+}