Change error displaying (colors!)

- For each file, the "OK!" and "Error!" are changed
  to [OK] and [KO] and moved to the left of the
  file names.
- The [OK] are green and the [KO] are red.
- If there is a "Notice:" for a file,
  the [OK] becomes yellow.

norminette/errors.py

@@ -148,6 +148,10 @@ def add(self, *args, **kwargs) -> None:
     def status(self) -> Literal["OK", "Error"]:
         return "OK" if all(it.level == "Notice" for it in self._inner) else "Error"
 
+    @property
+    def has_notice(self) -> bool:
+        return any(it.level == "Notice" for it in self._inner)
+
     def append(self, value: Union[NormError, NormWarning]) -> None:
         # TODO Remove NormError and NormWarning since it does not provide `length` data
         assert isinstance(value, (NormError, NormWarning))
@@ -172,9 +176,20 @@ def __init_subclass__(cls) -> None:
 
 class HumanizedErrorsFormatter(_formatter):
     def __str__(self) -> str:
+
+        def colorize(status: Literal["OK", "Error", "Notice"], txt: str) -> str:
+            return "\033[9" + (
+                "1" if status == "Error" else (
+                    "2" if status == "OK" else "3"
+                )) + "m" + txt + "\033[0m"
+
         output = ''
         for file in self.files:
-            output += f"{file.basename}: {file.errors.status}!"
+            status = file.errors.status
+            if status == "OK" and file.errors.has_notice:
+                status = "Notice"
+            output += colorize(status, f"[{'KO' if status == 'Error' else 'OK'}]")
+            output += f" {file.basename}"
             for error in file.errors:
                 highlight = error.highlights[0]
                 output += f"\n{error.level}: {error.name:<20} "