freertos: Migrate port tests to test app

This commit migrates the "port" tests to the test app as a component.

components/freertos/test_apps/freertos/CMakeLists.txt

@@ -5,7 +5,8 @@ cmake_minimum_required(VERSION 3.16)
 # split into different directores in the test app's root directory. Each test
 # type is treated as separate component
 set(test_types
-    "kernel")
+    "kernel"
+    "port")
 
 list(APPEND EXTRA_COMPONENT_DIRS
      ${test_types}  # Add each test type as a component

components/freertos/test_apps/freertos/port/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Register all of the "port" tests as a component
+
+# In order for the cases defined by `TEST_CASE` in "port" to be linked into
+# the final elf, the component can be registered as WHOLE_ARCHIVE
+idf_component_register(SRC_DIRS "."
+                       PRIV_REQUIRES test_utils
+                       WHOLE_ARCHIVE)
+
+# Todo: Fix no-format errors
+target_compile_options(${COMPONENT_LIB} PRIVATE "-Wno-format")