Test: Added tests for unused imports

Author: swamishiju

integration_tests/CMakeLists.txt

@@ -606,6 +606,7 @@ RUN(NAME test_import_04      LABELS cpython llvm llvm_jit c)
 RUN(NAME test_import_05      LABELS cpython llvm llvm_jit c wasm wasm_x86 wasm_x64)
 RUN(NAME test_import_06      LABELS cpython llvm llvm_jit)
 RUN(NAME test_import_07      LABELS cpython llvm llvm_jit c)
+RUN(NAME test_import_08      LABELS cpython llvm)
 RUN(NAME test_math           LABELS cpython llvm llvm_jit NOFAST)
 RUN(NAME test_membership_01  LABELS cpython llvm)
 RUN(NAME test_numpy_01       LABELS cpython llvm llvm_jit c)

integration_tests/test_import_08.py

@@ -0,0 +1,5 @@
+import string
+
+import test_import_08_module
+
+# Supporting unused imports that "have expr own variables"

integration_tests/test_import_08_module.py

@@ -0,0 +1,6 @@
+from lpython import i32
+
+a: i32 = 10
+b: i32 = a + 10
+
+print("Inside import")