Input handling and debouncing (#148)

* Add input driver and definitions for target_f2

* Add input_dump example

* Invert charge input

* Fix back and left button configuration

* remove input debug

* input testing case

* move header

* lint code

Co-authored-by: aanper <mail@s3f.ru>

wiki/Testing.md

@@ -1,4 +1,4 @@
-# Bootloader test
+# Bootloader testcase
 
 1. `# Clean flash`
 2. `make -C bootloader flash` `# Load bootloader`
@@ -34,4 +34,29 @@
 11. Wait 0.5 s
 12. `# Expect FW`
     * Expect: uart welcome message
-    * Expect: USB Flipper CDC
+    * Expect: USB Flipper CDC
+
+# Input testcase
+
+1. `docker-compose exec dev make -C target_f2 example_input_dump`
+2. Flash
+3. For x in ```
+[
+    (Up, "00"),
+    (Down, "01"),
+    (Right, "02"),
+    (Left, "03"),
+    (Ok, "04"),
+    (Back, "05"),
+]
+```
+    * Press ${x[0]}
+    * wait 0.05
+    * Expect: Uart: "event: ${x[1]} pressed"
+    * wait 0.05
+    * Release ${x[0]}
+    * wait 0.05
+    * Expect: Uart: "event: ${x[1]} released"
+    * wait 0.05
+
+TODO: add debouncing check (multiple press and check there is no multiple events)