Vue 2 to Vue 3 migration

[horsburgh]

Describe the feature you'd like and what it will do
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The DSP should be updated to use Vue 3 instead of Vue 2.

Why is this feature important?
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Important for sustainability and forward compatibility. Vue 2 is bing deprecated.

Is your feature request related to a problem? Please describe.
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NA

Additional context
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NA

[Maurier]

The update to Vue 3 is almost complete, but we are waiting on a few bug fixes in one of our main dependencies.

vuetifyjs/vuetify#19441
vuetifyjs/vuetify#19533
vuetifyjs/vuetify#19391

These fixes are currently in a pull request: vuetifyjs/vuetify#19795