Create rule S1116: Empty statements should be removed (#4728)

* Add rust to rule S1116

* Update RSPEC

---------

Co-authored-by: yassin-kammoun-sonarsource <yassin-kammoun-sonarsource@users.noreply.github.com>
Co-authored-by: yassin-kammoun-sonarsource <yassin.kammoun@sonarsource.com>

rules/S1116/rust/metadata.json

@@ -0,0 +1,6 @@
+{
+  "tags": [
+    "unused",
+    "clippy"
+  ]
+}

rules/S1116/rust/rule.adoc

@@ -0,0 +1,49 @@
+== Why is this an issue?
+
+include::../description.adoc[]
+
+=== Code examples
+
+==== Noncompliant code example
+
+[source,rust,diff-id=1,diff-type=noncompliant]
+----
+fn main() {
+    let x = 5;
+
+    if x > 0 {
+        println!("x is positive");
+    }; // Noncompliant
+
+    match x {
+        1 => println!("x is one"),
+        2 => println!("x is two"),
+        _ => println!("x is something else"),
+    }; // Noncompliant
+}
+----
+
+==== Compliant solution
+
+[source,rust,diff-id=1,diff-type=compliant]
+----
+fn main() {
+    let x = 5;
+
+    if x > 0 {
+        println!("x is positive");
+    }
+
+    match x {
+        1 => println!("x is one"),
+        2 => println!("x is two"),
+        _ => println!("x is something else"),
+    }
+}
+----
+
+== Resources
+
+=== Documentation
+
+* Clippy Lints - https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_semicolon