WIP - add new baseclass for all api endpoints (serial, bluetooth, udp)

https://github.com/meshtastic/Meshtastic-esp32/issues/69

src/PhoneAPI.cpp

@@ -0,0 +1,53 @@
+#include "PhoneAPI.h"
+#include <assert.h>
+
+PhoneAPI::PhoneAPI()
+{
+    // Make sure that we never let our packets grow too large for one BLE packet
+    assert(FromRadio_size <= 512);
+    assert(ToRadio_size <= 512);
+}
+
+/**
+ * Handle a ToRadio protobuf
+ */
+void PhoneAPI::handleToRadio(const char *buf, size_t len)
+{
+    // FIXME
+}
+
+/**
+ * Get the next packet we want to send to the phone, or NULL if no such packet is available.
+ *
+ * We assume buf is at least FromRadio_size bytes long.
+ */
+bool PhoneAPI::getFromRadio(char *buf)
+{
+    return false; // FIXME
+}
+
+/**
+ * Return true if we have data available to send to the phone
+ */
+bool PhoneAPI::available()
+{
+    return true; // FIXME
+}
+
+//
+// The following routines are only public for now - until the rev1 bluetooth API is removed
+//
+
+void PhoneAPI::handleSetOwner(const User &o) {}
+
+void PhoneAPI::handleSetRadio(const RadioConfig &r) {}
+
+/**
+ * The client wants to start a new set of config reads
+ */
+void PhoneAPI::handleWantConfig(uint32_t nonce) {}
+
+/**
+ * Handle a packet that the phone wants us to send.  It is our responsibility to free the packet to the pool
+ */
+void PhoneAPI::handleToRadioPacket(MeshPacket *p) {}