docs: Add some main.py examples

These still need to be integrated into the generated documentation but
there were included in the most recent wasp-os video so let's get them
into the source code.

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>

docs/main/apps.py

@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# Copyright (C) 2020 Daniel Thompson
+
+import wasp
+
+from gadgetbridge import *
+wasp.system.schedule()
+
+# Registering normal apps *after* the schedule() ensures the
+# watch will still (partially) boot even if we end up taking
+# an exception during application init.
+wasp.system.register('apps.flashlight.TorchApp')
+wasp.system.register('apps.gameoflife.GameOfLifeApp')

docs/main/chrono.py

@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# Copyright (C) 2020 Daniel Thompson
+
+import wasp
+
+# Instantiate the analogue clock application and replace the default
+# (digital) clock with this alternative.
+from apps.chrono import ChronoApp
+clock = wasp.system.quick_ring[0]
+wasp.system.quick_ring[0] = ChronoApp()
+wasp.system.switch(wasp.system.quick_ring[0])
+wasp.system.register(clock)
+
+from gadgetbridge import *
+wasp.system.schedule()

docs/main/theme.py

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# Copyright (C) 2020 Daniel Thompson
+
+import wasp
+
+# Adopt a basic all-orange theme
+wasp.system.set_theme(
+        b'\xff\x00'     # ble
+        b'\xff\x00'     # scroll-indicator
+        b'\xff\x00'     # battery
+        b'\xff\x00'     # status-clock
+        b'\xff\x00'     # notify-icon
+        b'\xff\x00'     # bright
+        b'\xbe\xe0'     # mid
+        b'\xff\x00'     # ui
+        b'\xff\x00'     # spot1
+        b'\xff\x00'     # spot2
+        b'\x00\x0f'     # contrast
+    )
+
+from gadgetbridge import *
+wasp.system.schedule()