release: Zephyr 3.0.0-rc1

Release tag for Zephyr v3.0.0-rc1

Signed-off-by: Dan Kalowsky <dank@deadmime.org>
diff --git a/VERSION b/VERSION
index b5c2c35..7383be6 100644
--- a/VERSION
+++ b/VERSION
@@ -1,5 +1,5 @@
-VERSION_MAJOR = 2
-VERSION_MINOR = 7
-PATCHLEVEL = 99
+VERSION_MAJOR = 3
+VERSION_MINOR = 0
+PATCHLEVEL = 0
 VERSION_TWEAK = 0
-EXTRAVERSION =
+EXTRAVERSION = rc1