[Prefix] Add Check to PrefixConverter to Prevent `/` Prefixes

[mellow-org]

Prefixes cannot start with a slash (/) because it raises a ValueError, indicating a conflict with Discord slash commands. This check has been added to the converter to prevent the issue.

Summary by Sourcery

Prevent prefixes from starting with a slash in the PrefixConverter to avoid conflicts with Discord slash commands and update the version of the Prefix management cog.

Bug Fixes:

• Add a check in the PrefixConverter to prevent prefixes from starting with a slash ('/'), which raises a ValueError due to conflicts with Discord slash commands.

Enhancements:

• Update the version of the Prefix management cog from 1.0.4 to 1.0.5.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request adds a new check to the PrefixConverter class to prevent prefixes that start with a forward slash (/). The change is implemented by adding a conditional statement in the convert method of the PrefixConverter class. Additionally, the version number of the Prefix cog has been updated.

File-Level Changes

Files	Changes
prefix/converters.py	Added a new check in the PrefixConverter's convert method to raise a BadArgument if the prefix starts with a slash
prefix/prefix.py	Updated the version number of the Prefix cog from 1.0.4 to 1.0.5

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[sravan1946]

LGTM, could you run pre-commit on it @mellow-org

[mellow-org]

Done! @sravan1946