Migrate build to CMake and standard github workflows

Replace makefiles with CMakeLists.txt. This will allow for IDE and
platform agnostic builds of FFF.

Update the CI for FFF to use github workflows which don't depend on MS VC.
The workflow added will verify the pull requests sent to master buy
running 'buildandtest' which mirrors the developer workflow.

Signed-off-by: Yuval Peress <peress@google.com>

examples/embedded_ui/include/SYSTEM.h

@@ -0,0 +1,21 @@
+/*
+ * DISPLAY.h
+ *
+ *  Created on: Dec 17, 2010
+ *      Author: mlong
+ */
+
+#ifndef SYSTEM_H_
+#define SYSTEM_H_
+
+typedef void (*irq_func_t)(void);
+
+#define IRQ_GPIO_0 0x70
+#define IRQ_GPIO_1 0x71
+#define IRQ_GPIO_2 0x72
+#define IRQ_GPIO_3 0x73
+
+
+void SYSTEM_register_irq(irq_func_t, unsigned int irq);
+
+#endif /* SYSTEM_H_ */