Add decoder conf for Reolink doorbell (closes #2277)

conf/Reolink-doorbell.conf

@@ -0,0 +1,19 @@
+# Reolink doorbell
+#
+# This decoder reads button presses from a EV1527 based Reolink doorbell.
+#
+# Analyzed by @sdalu in #2277
+
+decoder {
+        name        = Reolink-Doorbell,
+        modulation  = OOK_PWM,
+        short       = 352,
+        long        = 956,
+        tolerance   = 242,
+        gap         = 872,
+        reset       = 9360,
+        bits       >= 24,
+        rows       >= 30,
+        unique,
+        get         = @0:{24}:id,
+}