Power: bq25896 and bq27220 drivers, portable power api. (#224)

* Power: add portability layer, port to F3.
* F3: bq25896 driver stab
* GUI: new primary and secondary fonts
* F3: bq25896 register map, basic functions
* F3: move bq27220 command descritpion to separate file. Code format.
* Power: OTG enable/disable
* Power: choose more correct profile
* F3: pet bq25896 watchdog sometimes

firmware/targets/f3/api-hal/api-hal-power.c

@@ -0,0 +1,28 @@
+#include <api-hal-power.h>
+#include <bq27220.h>
+#include <bq25896.h>
+
+void api_hal_power_init() {
+    bq27220_init();
+    bq25896_init();
+}
+
+uint8_t api_hal_power_get_pct() {
+    return bq27220_get_state_of_charge();
+}
+
+bool api_hal_power_is_charging() {
+    return bq25896_is_charging();
+}
+
+void api_hal_power_off() {
+    bq25896_poweroff();
+}
+
+void api_hal_power_enable_otg() {
+    bq25896_enable_otg();
+}
+
+void api_hal_power_disable_otg() {
+    bq25896_disable_otg();
+}