Add ability to filter randomly selected gradients

[msaps]

Add filters to Randient with UIGradientFilter

[uias-bot]

SwiftLint found issues

Warnings

File	Line	Reason
UIColor+Analysis.swift	12	Lines should not have trailing whitespace.
Randient.swift	12	Lines should not have trailing whitespace.
Randient.swift	14	Lines should not have trailing whitespace.
Randient.swift	17	Lines should not have trailing whitespace.
Randient.swift	20	Lines should not have trailing whitespace.
Randient.swift	22	Lines should not have trailing whitespace.
Randient.swift	29	Lines should not have trailing whitespace.
Randient.swift	40	Lines should not have trailing whitespace.
Randient.swift	48	Lines should not have trailing whitespace.
Randient.swift	51	Lines should not have trailing whitespace.
Randient.swift	65	Lines should not have trailing whitespace.
Randient.swift	73	Lines should not have trailing whitespace.
Randient.swift	80	Lines should not have trailing whitespace.
Randient.swift	90	Lines should not have trailing whitespace.
GradientView.swift	13	Lines should not have trailing whitespace.
GradientView.swift	15	Lines should not have trailing whitespace.
GradientView.swift	22	Lines should not have trailing whitespace.
GradientView.swift	33	Lines should not have trailing whitespace.
GradientView.swift	44	Lines should not have trailing whitespace.
GradientView.swift	57	Lines should not have trailing whitespace.
GradientView.swift	61	Lines should not have trailing whitespace.
GradientView.swift	63	Lines should not have trailing whitespace.
GradientView.swift	68	Lines should not have trailing whitespace.
GradientView.swift	73	Lines should not have trailing whitespace.
GradientView.swift	79	Lines should not have trailing whitespace.
GradientView.swift	81	Lines should not have trailing whitespace.
GradientView.swift	93	Lines should not have trailing whitespace.
GradientView.swift	98	Lines should not have trailing whitespace.
GradientView.swift	100	Lines should not have trailing whitespace.
GradientView.swift	102	Lines should not have trailing whitespace.
GradientView.swift	115	Lines should not have trailing whitespace.
GradientView.swift	119	Lines should not have trailing whitespace.
GradientView.swift	129	Lines should not have trailing whitespace.
GradientView.swift	147	Lines should not have trailing whitespace.
GradientView.swift	157	Lines should not have trailing whitespace.
UIGradientFilter.swift	13	Lines should not have trailing whitespace.
UIGradientFilter.swift	15	Lines should not have trailing whitespace.
UIGradientFilter.swift	17	Lines should not have trailing whitespace.
UIGradientFilter.swift	19	Lines should not have trailing whitespace.
UIGradientFilter.swift	22	Lines should not have trailing whitespace.
UIGradientFilter.swift	24	Lines should not have trailing whitespace.
UIGradientFilter.swift	31	Lines should not have trailing whitespace.

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