seo improvements

[Drew-Macgibbon]

Let's compile a ranked list of things we can do for better SEO. To start let's just list things out, then we will have a call to discuss what is more important. We will finalize the list over the next week. Add to it as you see fit.

SEO ideas:

• Track bundle size over time, there's likely a github script we can use to record this and store it in a file when a PR is opened.
• Image optimization, specifically for mobile we can use <nuxt-picture> to leverage srcsets
• Use composables like useMeta and useSeoMeta to set meta tags for relevant pages, more here
• remove unessasary dependencies or load from NPM and extract to a worker using @nuxtjs/partytown where possible
• @nuxtjs/robots generates robots.txt on build. Partially implemented, just need to config correctly and check it's found by crawlers.
• use unlighthouse for measuring google lighthouse for all pages. We want to run this for each PR and store the results so we can track over time.