update/downgrade v1 to V2

src/model_version_1.rs

@@ -0,0 +1,27 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize)]
+pub struct SaveVersion1 {
+    pub template: WeekVersion1,
+    pub version: u32,
+    pub weeks: Vec<WeekVersion1>,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct WeekVersion1 {
+    pub monday: DayVersion1,
+    pub tuesday: DayVersion1,
+    pub wednesday: DayVersion1,
+    pub thurday: DayVersion1,
+    pub friday: DayVersion1,
+    #[serde(alias = "weekNumber", rename(serialize = "weekNumber"))]
+    pub week_number: u32,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct DayVersion1 {
+    #[serde(alias = "break", rename(serialize = "break"))]
+    pub break_time: u32,
+    pub end: String,
+    pub start: String,
+}