[FIR-TEST] Move analysis tests to separate module

compiler/fir/analysis-tests/testData/resolve/expresssions/inference/id.kt

@@ -0,0 +1,8 @@
+fun <T> id(t: T) = t
+
+
+fun main() {
+    val a = id("string")
+    val b = id(null)
+    val c = id(id(a))
+}