feat(tools): Add 'check' field to idf.py actions

tools/idf_py_actions/tools.py

@@ -988,19 +988,12 @@ def get_sdkconfig_value(sdkconfig_file: str, key: str) -> str | None:
     pattern = re.compile(rf'^{key}=\"?([^\"]*)\"?$')
     with open(sdkconfig_file, encoding='utf-8') as f:
         for line in f:
-            match = re.match(pattern, line)
+            match = re.match(pattern, line.strip())
             if match:
                 value = match.group(1)
     return value
 
 
-def is_target_supported(project_path: str, supported_targets: list) -> bool:
-    """
-    Returns True if the active target is supported, or False otherwise.
-    """
-    return get_target(project_path) in supported_targets
-
-
 def _check_idf_target(
     args: 'PropertyDict', prog_name: str, cache: dict, cache_cmdl: dict, env: dict | None = None
 ) -> None: