feat:standardize_lang_tag new utils

ported from some TTS/STT plugins, will be useful across OVOS ecosystem

ovos_utils/lang/__init__.py

@@ -4,6 +4,17 @@
 from ovos_utils.file_utils import resolve_resource_file
 
 
+def standardize_lang_tag(lang_code, macro=True):
+    """https://langcodes-hickford.readthedocs.io/en/sphinx/index.html"""
+    try:
+        from langcodes import standardize_tag as std
+        return std(lang_code, macro=macro)
+    except:
+        if macro:
+            return lang_code.split("-")[0].lower()
+        return lang_code.lower()
+
+
 def get_language_dir(base_path, lang="en-us"):
     """ checks for all language variations and returns best path """
     lang_path = join(base_path, lang)

requirements/extras.txt

@@ -3,3 +3,4 @@ ovos-plugin-manager>=0.0.25,<1.0.0
 ovos-config>=0.0.12,<1.0.0
 ovos-workshop>=0.0.13,<1.0.0
 ovos_bus_client>=0.0.8,<1.0.0
+langcodes