Add minunit test framework (#168)

* add minunit tests

* fix logging

* ignore unexisting time service on embedded targets

* fix warning, issue with printf

* add exitcode

* migrate to printf

* indicate test by leds

* add testing description

* redesigned minunit tests to allow testing in separate files

* add test step for local target

* add failure test

* add restore test_check

* testing description

Co-authored-by: rusdacent <rusdacentx0x08@gmail.com>
Co-authored-by: DrZlo13 <who.just.the.doctor@gmail.com>

wiki/testing/Input-test.md

@@ -0,0 +1,22 @@
+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)