Support new API changes

[VictoriqueMoe]

There have been a number of API changes to support buckets. you can refer to this PR: waifuvault/waifuVault-node-api#15

Buckets are temprry virtual buckets that are managed with a single token

here are the outline of the changes:

• uploadFile now takes an optinal path paramater that is a token. when supplied. it will call /uploadFile/{token} this is the bucket token
• the file info and upload response now returns a bucket prop that is nullable. if the file belongs to a bucket, the bucket token will be there
• createBucket endpoint that is a GET and takes no body (buckets are created once per IP). the endpoint is /rest/bucket/create
• deleteBucket endpoint a DELETE takes the bucxket token as a path param. the endpoint is /rest/bucket/${bucketToken}
• getBucket endpoint, a POST to /rest/bucket/get that takes the the body of:

{
   "bucket_token": "bucketToken"
}

the response of the get is an object with the shape of

"token": "string",
"files": FileResponseObject[]

where FileResponseObject is whatever type you have defined in the response of getFileInfo.

[VictoriqueMoe]

you can see the new api docs and the schemeas here: https://waifuvault.moe/api-docs