Document all the profile specific logic

[airenzp]

Document the profile settings related to the filters, as suggested by @siosonel

[siosonel]

Not urgent. Can follow the pattern in configs of other plots, where it's clear what the available options are. Something like this in js:

        countryTW: undefined,  // { id: 'Fcountry' || 'Acountry' },
	regionTW: undefined, // { id: 'FWHO_region' || 'AWHO_region' },
	...

or even better, convert to using typescript

type ProfileSettings = {
        ....,
        countryTW?:  { id: 'Fcountry' || 'Acountry' },
	regionTW?: { id: 'FWHO_region' || 'AWHO_region' },
}


const localFilter: ProfileSettings = { ... }