migrate blog

* [x] backup old blog to a tag
* [x] push empty quartz website onto `new` branch
* [ ] migrate old content to `new` branch
* ultimate goal here is to preserve old URLs if possible
* maybe I can just configure some specific URLs to redirect to preserve those old URLs?
* [x] naive move
* [x] recover old URLs
* [x] fix inline images
* [ ] recover image URLs? not sure if feasible?
* I think we might be good to go here, just need to double check
* [ ] Reconsider "attic" subfolder
* [ ] double check old posts look fine
* latex
* r code
* python code
* inline html
* images
* markdown tables
- might just need to activate https://quartz.jzhao.xyz/plugins/HardLineBreaks ?
* [ ] update home page
* [x] update social links
* [ ] add blog auto TOC (?)
* quick and easy solution: just move the attic content to a `blog` or `posts` subfolder or something like that, and then link to the blog on the front page or insert some sort of redirect from the index page to the `blog` page
* [x] fix favicon
* [ ] add DigThatData pfp
* [ ] update `about` page
* [ ] integrate `benchwarmers` content authoring mechanism
* might not even need to go that fancy, can probably just write markdown directly into `/posts`, right?
* conversely, this could be an obsidian plugin? my preference is to not need to use obsidian for authorship though. I guess quartz supports certain plugins or something? Maybe deal with TOC stuff later
* [ ] rename branch `master` to `main`