added simple little before and after when editing a snippet

[meatsnails]

Summary by Sourcery

Enhance the snippet editing functionality by showing the previous content alongside the new content in the confirmation message when a snippet is edited.

Enhancements:

• Display the previous content of a snippet alongside the new content when a snippet is edited.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request enhances the snippet editing functionality by adding a before and after comparison when a snippet is edited. The changes are implemented in the edit_snippet method of the snippets cog.

File-Level Changes

Files	Changes
tux/cogs/utility/snippets.py	Added retrieval of the previous snippet content before editing
tux/cogs/utility/snippets.py	Modified the success message to include both the previous and new content of the edited snippet
tux/cogs/utility/snippets.py	Removed unnecessary comments about indentation

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[meatsnails]

i'll be changing this to embeds later on but currently this is what i doing for now

[meatsnails]

very spammy with large snippets, at least truncate each to 50 chars

added that for now

[meatsnails]

very spammy with large snippets, at least truncate each to 50 chars

added that for now

as kaizen said ill prob add buttons to view the before and after once i get to adding embeding

[meatsnails]

kaizen wants me to add an embed and buttons for viewing the before and after before merging it so i marked it as unfinished

[electron271]

ok