SONARJAVA-4826 S6880 Use switch instead of if else for pattern matching (#4726)

* SONARJAVA-4826 S6880 Use switch instead of if else for pattern matching

* Prototype implementation of quickfix

* Refactor + Improve quickfix indents

* Test first 3 quickfixes

* More rigorous implementation without quickfix

* Make test cases follow the spec more closely

* Implement quickfix

* Add test for guards + Test first quickfix

* Don't generate guards for constant cases + add tests

* Fix bugs with constant cases + Refactor

* Add test

* Inline constant argument

* Handle non-block branches + add tests

* Add test

* Add tests

* Fix autoscan

* Apply requested changes

* Lift returns when possible

* Add test case

* Reformatting

Author: ValentinAebi-sonar

its/autoscan/src/test/resources/autoscan/autoscan-diff-by-rules.json

@@ -2957,6 +2957,12 @@
     "falseNegatives": 6,
     "falsePositives": 0
   },
+  {
+    "ruleKey": "S6880",
+    "hasTruePositives": true,
+    "falseNegatives": 0,
+    "falsePositives": 0
+  },
   {
     "ruleKey": "S6885",
     "hasTruePositives": true,

its/autoscan/src/test/resources/autoscan/diffs/diff_S6880.json

@@ -0,0 +1,6 @@
+{
+  "ruleKey": "S6880",
+  "hasTruePositives": true,
+  "falseNegatives": 0,
+  "falsePositives": 0
+}