Add the rest of the color filters

[mattleibow]

Description of Change

Add a few more color filters from the C++ API to the C API.

SkiaSharp Issue

Related to mono/SkiaSharp#1775

API Changes

sk_colorfilter_t* sk_colorfilter_new_hsla_matrix(const float array[20]);
sk_colorfilter_t* sk_colorfilter_new_linear_to_srgb_gamma(void);
sk_colorfilter_t* sk_colorfilter_new_srgb_to_linear_gamma(void);
sk_colorfilter_t* sk_colorfilter_new_lerp(float t, sk_colorfilter_t* dst, sk_colorfilter_t* src);

Behavioral Changes

None.

Required SkiaSharp PR

Requires mono/SkiaSharp#2882

PR Checklist

• Rebased on top of skiasharp at time of PR
• Changes adhere to coding standard
• Updated documentation