Downloader support!

[CuddleBear92]

Here is the sites that needs supporting!
Each site has an added status and a login status. Once logins have been tested by an user then it gets checked!

• Pixeldrain Added
• Pixeldrain Login Added
  (tested myself! API key added and downloads are being triggered with the premium download feature even.)
• Mega.nz Added
• Mega.nz Login Added
• GoFile Added
• BuzzHeavier Added
• Datanodes Added
• Datanodes Login Added
• Mixdrop Added
• Mixdrop Login Added
• WorkUpload Added
• WorkUpload Login Added
• UploadHeaven Added
• UploadHeaven Login Added
• VikingFile Added
• VikingFile Login Added
• Mediafire Added
• Mediafire Login Added
• Racaty Added
• Racaty Login Added
• Akirabox Added
• Akirabox Login Added
• Anonfiles Added
• Anonfiles Login Added
• 1finchier Added
• 1finchier Login Added

[CuddleBear92]

Pixeldrain was added first with login support.
Mega.nz currently support downloading and login aswell.
Leaving this for our AI overlords.

[codeon89]

@CuddleBear92 Buzzheavier (no-login & login) support PR: #375
(note: i don't believe login helps anything - it's meant for uploader)

[CuddleBear92]

removed BuzzHeavier login from the main issue since its not needed for any download rates or anything like that.

[codeon89]

Gofile (no-login) added: #408

Gofile (premium) will be done separately since they have access to direct links & file contents API, while the PR above use some workaround. However, the guest (20 request/min) and free account (60 request/min) have quite generous quota, and you can sort of reset them 👀