Split bootloader implementation into multiple files

embassy-boot/boot/src/partition.rs

@@ -0,0 +1,22 @@
+/// A region in flash used by the bootloader.
+#[derive(Copy, Clone, Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
+pub struct Partition {
+    /// Start of the flash region.
+    pub from: usize,
+    /// End of the flash region.
+    pub to: usize,
+}
+
+impl Partition {
+    /// Create a new partition with the provided range
+    pub const fn new(from: usize, to: usize) -> Self {
+        Self { from, to }
+    }
+
+    /// Return the length of the partition
+    #[allow(clippy::len_without_is_empty)]
+    pub const fn len(&self) -> usize {
+        self.to - self.from
+    }
+}