[FIR-TEST] Move analysis tests to separate module

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

@@ -0,0 +1,18 @@
+// !DUMP_CFG
+interface A {
+    fun foo(): A
+    fun bar(): A
+}
+
+interface B {
+    val foo: B
+    val bar: B
+}
+
+fun test_1(x: A?) {
+    x?.foo()?.bar()
+}
+
+fun test_2(x: B?) {
+    x?.foo?.bar
+}