Create rule S7411: Shared code in all branches should be extracted (#4744)

* Create rule S7411

* 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/S7411/metadata.json

@@ -0,0 +1,2 @@
+{
+}

rules/S7411/rust/metadata.json

@@ -0,0 +1,24 @@
+{
+  "title": "Shared code in all branches should be extracted",
+  "type": "CODE_SMELL",
+  "status": "ready",
+  "remediation": {
+    "func": "Constant\/Issue",
+    "constantCost": "5min"
+  },
+  "tags": [
+    "clippy"
+  ],
+  "defaultSeverity": "Major",
+  "ruleSpecification": "RSPEC-7411",
+  "sqKey": "S7411",
+  "scope": "All",
+  "defaultQualityProfiles": ["Sonar way"],
+  "quickfix": "unknown",
+  "code": {
+    "impacts": {
+      "MAINTAINABILITY": "HIGH"
+    },
+    "attribute": "DISTINCT"
+  }
+}

rules/S7411/rust/rule.adoc

@@ -0,0 +1,39 @@
+== Why is this an issue?
+
+Having shared code in all branches of an if-statement leads to redundancy, making the code harder to maintain and increasing the risk of errors. It also reduces readability by cluttering the distinct logic of each branch. Extracting shared code into a single location improves maintainability.
+
+== How to fix it
+
+To fix this issue, move the shared code outside of the if-statement branches so that it is executed regardless of the condition.
+
+=== Code examples
+
+==== Noncompliant code example
+
+[source,rust,diff-id=1,diff-type=noncompliant]
+----
+let result = if condition {
+    println!("Hello World");
+    42
+} else {
+    println!("Hello World");
+    24
+};
+----
+
+==== Compliant solution
+
+[source,rust,diff-id=1,diff-type=compliant]
+----
+println!("Hello World");
+let result = if condition {
+    42
+} else {
+    24
+};
+----
+
+== Resources
+=== Documentation
+
+* Clippy Lints - https://rust-lang.github.io/rust-clippy/master/index.html#branches_sharing_code