Handle rate limiting in FunkWhale

Quoting API docs (https://docs.funkwhale.audio/swagger/):

Header Example value Description value

X-RateLimit-Limit 50 The number of allowed requests whithin a given period

X-RateLimit-Duration 3600 The time window, in seconds, during which those requests are accounted for.

X-RateLimit-Scope login The name of the scope as computed for the request

X-RateLimit-Remaining 42 How many requests can be sent with the same scope before the limit applies

Retry-After (if X-RateLimit-Remaining is 0) 3543 How many seconds to wait before a retry

X-RateLimit-Reset 1568126089 A timestamp indicating when X-RateLimit-Remaining will return to its higher possible value

X-RateLimit-ResetSeconds 3599 How many seconds to wait before X-RateLimit-Remaining returns to its higher possible value

rafalopilowski1 / djSonic

Handle rate limiting in FunkWhale #32

Header	Example value	Description value
X-RateLimit-Limit	50	The number of allowed requests whithin a given period
X-RateLimit-Duration	3600	The time window, in seconds, during which those requests are accounted for.
X-RateLimit-Scope	login	The name of the scope as computed for the request
X-RateLimit-Remaining	42	How many requests can be sent with the same scope before the limit applies
Retry-After (if X-RateLimit-Remaining is 0)	3543	How many seconds to wait before a retry
X-RateLimit-Reset	1568126089	A timestamp indicating when X-RateLimit-Remaining will return to its higher possible value
X-RateLimit-ResetSeconds	3599	How many seconds to wait before X-RateLimit-Remaining returns to its higher possible value