fix: missing page titles; add checks

[halfcyan]

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[halfcyan]

the checks on this make sure that new routes have a page title. you can opt out on a specific +page.svelte page, but it's manual, so you have to think about it.

i also added a new PageTitle component that adds / Stack to the end of tab titles so that you don't have to put it on all of your <svelte:head> elements.

[halfcyan]

i forgot to push a commit lol

[halfcyan]

resolves #69 btw

[addidotlol]

a lot of these page titles should be more clear about being sub-pages of colocation or admin, since theres a lot of duplicate or easily confused titles.

im also not sure using a script to force titles on pages is the ideal route here, it feels overkill & theres ways to automate a lot of these titles.

edit: this also should be a lint rule and not a script

[halfcyan]

i need to go back through all of this tomorrow