CLI flags, start setting up goreleaser, add build scripts

Copied and fixed the build scripts from jf-accounts, added them to the
.goreleaser.yml. Also:
data directory now stored in user's config folder
Handle timeouts in jfapi
Maybe more i forgot about.

mail/email.txt

@@ -0,0 +1,10 @@
+Hi {{ .username }},
+
+Someone has recently requests a password reset on Jellyfin.
+If this was you, enter the below pin into the prompt.
+This code will expire on {{ .expiry_date }}, at {{ .expiry_time }} UTC, which is in {{ .expires_in }}.
+If this wasn't you, please ignore this email.
+
+PIN: {{ .pin }}
+
+{{ .message }}