Add analyzer feedback for Annalyns Infiltration (#2700)

* Add analyzer feedback for Annalyns Infiltration

* Update analyzer according to comments

* Make if statement comment essential

* Remove trailing space

* Fix formatting

* Fix formatting

Author: kahgoh

exercises/concept/annalyns-infiltration/.meta/design.md

@@ -17,3 +17,30 @@ Nothing to report
 ## Prerequisites
 
 - `basics`: know how to define methods.
+
+## Analyzer
+
+This exercise could benefit from the following rules in the [analyzer]:
+
+- `essential`: If student returns a boolean literal, tell them it is possible to directly return the result of a expression. For example:
+
+  ```java
+  // instead of
+  if (knightIsAwake) {
+    return true;
+  } else {
+    return false;
+  }
+
+  // ... return the expression directly
+  return knightIsAwake;
+  ```
+
+- `essential`: If the student compares a boolean variable with a boolean literal (e.g. `knightIsAwake == true` or `archerIsAwake == false`), tell them this can be simplified to just the variables (e.g. `knightIsAwake` or `archerIsAwake`).
+- `essential`: If the student uses an `if` statement or the ternary operator, tell them this exercise was to explore booleans and boolean operators and this exercise can be solved without them.
+- `informative`: If the student uses an `||` expression to OR two smaller expressions and either expression is surrounded by parentheses and only ANDs some terms together (e.g. `knightIsAwake || (archerIsAwake && !prisonerIsAwake)`), tell them the parentheses is unnecessary because `&&` has the higher precedence over `||`.
+
+If the solution does not receive any of the above feedback, it must be exemplar.
+Leave a `celebratory` comment to celebrate the success!
+
+[analyzer]: https://github.com/exercism/java-analyzer