Move baro rate in to common type

src/decoders/common_types/barorate.rs

@@ -0,0 +1,43 @@
+// Copyright (c) 2023-2024 Frederick Clausen II
+
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file or at
+// https://opensource.org/licenses/MIT.
+
+use serde::{Deserialize, Serialize};
+use std::fmt;
+
+#[derive(Deserialize, Debug, Clone, PartialEq, PartialOrd, Default)]
+#[serde(from = "i32")]
+pub struct BaroRate {
+    baro_rate: i32,
+}
+
+impl Serialize for BaroRate {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        serializer.serialize_i32(self.baro_rate)
+    }
+}
+
+impl From<i16> for BaroRate {
+    fn from(baro_rate: i16) -> Self {
+        Self {
+            baro_rate: i32::from(baro_rate),
+        }
+    }
+}
+
+impl From<i32> for BaroRate {
+    fn from(baro_rate: i32) -> Self {
+        Self { baro_rate }
+    }
+}
+
+impl fmt::Display for BaroRate {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{} ft/min", self.baro_rate)
+    }
+}