Enforce Vue option order

[fzdy1914]

As pointed out by @jamessspanggg , it is better to follow the option order style recommended by Vue in our JS file, which may increase the readability of the code a lot.

See https://vuejs.org/v2/style-guide/index.html#Component-instance-options-order-recommended for more details.

[vig42]

We could enforce this using the ESLint Vue plugin. The 'order-in-components' rule does exactly this; there are also several other rules which could be worthwhile for us to include.

If we do so, we should probably update the DG as well, as it currently does not reference any style guide for Vue.

[gerhean]

Just want to add that the ESLint Vue plugin is already part of the project, and this particular rule can immediately be enforced just by removing this line:

https://github.com/reposense/RepoSense/blob/ed131f6294bf83fac436a6265bc4d53b022739f7/frontend/.eslintrc.json#L12

[vvidday]

Hi, can I try to take this issue? Thanks!