[FIR-TEST] Move analysis tests to separate module

compiler/fir/analysis-tests/testData/resolve/exhaustiveness_boolean.kt

@@ -0,0 +1,25 @@
+fun test_1(b: Boolean) {
+    val x = when (b) {
+        true -> 1
+    }
+    val y = when (b) {
+        true -> 1
+        false -> 2
+    }
+    val z = when (b) {
+        true -> 1
+        else -> 2
+    }
+}
+
+fun test_2(b: Boolean?) {
+    val x = when (b) {
+        true -> 1
+        false -> 2
+    }
+    val y = when (b) {
+        true -> 1
+        false -> 2
+        null -> 3
+    }
+}