[FIR-TEST] Move analysis tests to separate module

compiler/fir/analysis-tests/testData/resolve/cfg/loops.kt

@@ -0,0 +1,68 @@
+// !DUMP_CFG
+fun testWhile(b: Boolean, x: Any?) {
+    while (b) {
+        val y = x is String
+    }
+    x is String
+}
+
+fun testDoWhile(b: Boolean, x: Any?) {
+    do {
+        val y = x is String
+    } while (b)
+    x is String
+}
+
+fun testFor(x: Any?) {
+    for (i in 0..5) {
+        val y = x is String
+    }
+    x is String
+}
+
+fun testWhileTrue() {
+    while (true) {
+        1
+    }
+    1
+}
+
+fun testWhileTrueWithBreak(b: Boolean) {
+    while (true) {
+        if (b) {
+            break
+        }
+    }
+    1
+}
+
+
+fun testWhileFalse() {
+    while (false) {
+        1
+    }
+    1
+}
+
+fun testDoWhileTrue() {
+    do {
+        1
+    } while (true)
+    1
+}
+
+fun testDoWhileTrueWithBreak(b: Boolean) {
+    do {
+        if (b) {
+            break
+        }
+    } while (true)
+    1
+}
+
+fun testDoWhileFalse() {
+    do {
+        1
+    } while (false)
+    1
+}