boards: initialize kakute-f7-mini-v3

Signed-off-by: Onur Özkan <work@onurozkan.dev>

boards/kakute-f7-mini-v3/src/main.rs

@@ -0,0 +1,36 @@
+#![no_std]
+#![no_main]
+
+use panic_halt as _;
+
+#[rtic::app(device = stm32f7::stm32f745, peripherals = true)]
+mod app {
+    #[shared]
+    struct Shared {
+        // TODO
+    }
+
+    #[local]
+    struct Local {
+        // TODO
+    }
+
+    #[init]
+    fn init(_context: init::Context) -> (Shared, Local) {
+        (Shared {}, Local {})
+    }
+
+    #[task(binds = EXTI4, priority = 15)]
+    fn imu_data_ready(_context: imu_data_ready::Context) {
+        // TODO
+    }
+
+    #[idle]
+    fn idle(_context: idle::Context) -> ! {
+        // TODO
+
+        loop {
+            cortex_m::asm::wfi();
+        }
+    }
+}