Read/Write formats

Dasel supports a number of file formats out of the box.

Format	Read	Write	Notes
json	✅	❌
yaml	✅	✅
hcl	✅	❌	Flags available.
csv	❌	❌
toml	❔	❔	Not fully featured.
xml	✅	❌	Flags available.
dasel	✅	❌	This is not a real format, but instead allows dasel literals to be parsed on input strings.