✨ Added data migration service

frontend/bindings/time/models.ts

@@ -5,6 +5,42 @@
 // @ts-ignore: Unused imports
 import {Create as $Create} from "@wailsio/runtime";
 
+/**
+ * A Duration represents the elapsed time between two instants
+ * as an int64 nanosecond count. The representation limits the
+ * largest representable duration to approximately 290 years.
+ */
+export enum Duration {
+    /**
+     * The Go zero value for the underlying type of the enum.
+     */
+    $zero = 0,
+
+    minDuration = -9223372036854775808,
+    maxDuration = 9223372036854775807,
+
+    /**
+     * Common durations. There is no definition for units of Day or larger
+     * to avoid confusion across daylight savings time zone transitions.
+     * 
+     * To count the number of units in a [Duration], divide:
+     * 
+     * 	second := time.Second
+     * 	fmt.Print(int64(second/time.Millisecond)) // prints 1000
+     * 
+     * To convert an integer number of units to a Duration, multiply:
+     * 
+     * 	seconds := 10
+     * 	fmt.Print(time.Duration(seconds)*time.Second) // prints 10s
+     */
+    Nanosecond = 1,
+    Microsecond = 1000,
+    Millisecond = 1000000,
+    Second = 1000000000,
+    Minute = 60000000000,
+    Hour = 3600000000000,
+};
+
 /**
  * A Time represents an instant in time with nanosecond precision.
  *