Reformat messages and add new centralized exception handling (#1417)

* Update and modularize exception handling

cc #1024 #1141

- Stack traces are no longer shown to users unless the --debug flag is
  being used
- Errors, warnings, and other messages contain color as needed
- Converted error messages to Enum
- Adds print_msg function to centralize output (this should replace all
  other output in other modules)

Co-authored-by: Micah Jerome Ellison <micah.jerome.ellison@gmail.com>

jrnl/config.py

@@ -7,7 +7,11 @@ import yaml
 import xdg.BaseDirectory
 
 from . import __version__
-from .exception import JrnlError
+from jrnl.exception import JrnlException
+from jrnl.messages import Message
+from jrnl.messages import MsgText
+from jrnl.messages import MsgType
+
 from .color import ERROR_COLOR
 from .color import RESET_COLOR
 from .output import list_journals
@@ -68,12 +72,18 @@ def get_config_path():
     try:
         config_directory_path = xdg.BaseDirectory.save_config_path(XDG_RESOURCE)
     except FileExistsError:
-        raise JrnlError(
-            "ConfigDirectoryIsFile",
-            config_directory_path=os.path.join(
-                xdg.BaseDirectory.xdg_config_home, XDG_RESOURCE
+        raise JrnlException(
+            Message(
+                MsgText.ConfigDirectoryIsFile,
+                MsgType.ERROR,
+                {
+                    "config_directory_path": os.path.join(
+                        xdg.BaseDirectory.xdg_config_home, XDG_RESOURCE
+                    )
+                },
             ),
         )
+
     return os.path.join(
         config_directory_path or os.path.expanduser("~"), DEFAULT_CONFIG_NAME
     )