inital commit, which is clearly not initial

Signed-off-by: Uncle Stretch <uncle.stretch@ghostchain.io>

runtime/common/src/weights/block_weights.rs

@@ -0,0 +1,27 @@
+use sp_core::parameter_types;
+use sp_weights::{constants::WEIGHT_PER_TIME_PER_NANOS, Weight};
+
+parameter_types! {
+    pub const BlockExecutionWeight: Weight =
+        Weight::from_ref_time(WEIGHT_PER_TIME_PER_NANOS.saturating_mul(7_955_558));
+}
+
+#[cfg(test)]
+mod test_weights {
+    use sp_weights::constants;
+
+    #[test]
+    fn sane() {
+        let w = super::BlockExecutionWeight::get();
+
+        assert!(
+            w.ref_time() >= 100u64 * constants::WEIGHT_PER_TIME_PER_MICROS,
+            "Weight should be at least 100 µs."
+        );
+
+        assert!(
+			w.ref_time() <= 50u64 * constants::WEIGHT_REF_TIME_PER_MILLIS,
+			"Weight should be at most 50 ms."
+		);
+    }
+}