feat: new patch for mysql options

[kaustavb12]

Description

Currently no charset is set if extrenal MySQL instance is used with Tutor. Also, there is no option to set charset as required.

This PR introduces a patch called mysql-options which will allow tutor user to set charset and other options as required.

Other information

Private Ref : FAL-3945

[bradenmacdonald]

Shouldn't we just make charset: "utf8mb4" the default in general, rather than relying on users to patch it? Is it not the case because some people use an old version of MySQL that doesn't support it, or have old table formats, or what?

[kaustavb12]

@bradenmacdonald

Making the charset default would definitely be the easier option.

Is it not the case because some people use an old version of MySQL that doesn't support it, or have old table formats, or what?

Yes, I suspect that is why the {%- if RUN_MYSQL %} condition was added in the first place.

I debated whether to just remove the if condition, but finally went with adding the new patch since that would give more flexibility anyways for adding other options there if someone needs it.

[bradenmacdonald]

We'll need some input here from a Tutor maintainer.

[regisb]

Let's not add anything to this file, which I would very much like to see disappear. MySQL settings can already be overridden from the edx-platform common settings. Let's not add useless patches.

[kaustavb12]

Cool. Closing this PR.