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/commands.py

@@ -13,7 +13,10 @@ avoid any possible overhead for these standalone commands.
 """
 import platform
 import sys
-from .exception import JrnlError
+from jrnl.exception import JrnlException
+from jrnl.messages import Message
+from jrnl.messages import MsgText
+from jrnl.messages import MsgType
 
 
 def preconfig_diagnostic(_):
@@ -70,10 +73,15 @@ def postconfig_encrypt(args, config, original_config, **kwargs):
     journal = open_journal(args.journal_name, config)
 
     if hasattr(journal, "can_be_encrypted") and not journal.can_be_encrypted:
-        raise JrnlError(
-            "CannotEncryptJournalType",
-            journal_name=args.journal_name,
-            journal_type=journal.__class__.__name__,
+        raise JrnlException(
+            Message(
+                MsgText.CannotEncryptJournalType,
+                MsgType.ERROR,
+                {
+                    "journal_name": args.journal_name,
+                    "journal_type": journal.__class__.__name__,
+                },
+            )
         )
 
     journal.config["encrypt"] = True