Smallest CMS

Baby step towards a "real" CMS... building the minimumiest barely-viable-iest product. A basic HTML form with Title, Content, Tags, and optional Image uploader. If there's an image, it uses multer to save the image on my fileserver and returns the filename for that image. The rest of the data is returned as raw text in the browser, that I can paste into an empty markdown file.

Next step - have this barely-a-CMS save that raw text as a markdown file, in... I guess I should save it in the Github repo for the blog? And use a webhook to tell Netlify to re-build?