feat(spinner): Eva style

[yggg]

Please read and mark the following check list before creating a pull request:

• I read and followed the CONTRIBUTING.md guide.
• I read and followed the New Feature Checklist guide.

Short description of what this resolves:

BREAKING CHANGES:

Following spinner theme properties were renamed:
spinner-bg -> spinner-background-color
spinner-circle-bg -> spinner-circle-filled-color
spinner-fg -> spinner-text-color
spinner-primary-bg -> spinner-primary-circle-filled-color
spinner-info-bg -> spinner-info-circle-filled-color
spinner-success-bg -> spinner-success-circle-filled-color
spinner-warning-bg -> spinner-warning-circle-filled-color
spinner-danger-bg -> spinner-danger-circle-filled-color
spinner-xsmall -> spinner-height-tiny
spinner-small -> spinner-height-small
spinner-medium -> spinner-height-medium
spinner-large -> spinner-height-large
spinner-xlarge -> spinner-height-giant

Following properties were removed:
spinner-xxsmall
spinner-xxlarge
spinner-disabled-bg
spinner-disabled-fg
spinner-active-bg

'active' and 'disabled' along with NbSpinnerComponent STATUS_ACTIVE, STATUS_DISABLED static properties statuses were removed.

Following NbSpinnerComponent static properties were removed:
SIZE_XXSMALL, SIZE_XSMALL, SIZE_SMALL, SIZE_MEDIUM, SIZE_LARGE, SIZE_XLARGE, SIZE_XXLARGE, STATUS_PRIMARY, STATUS_INFO, STATUS_SUCCESS, STATUS_WARNING, STATUS_DANGER.

Classes '[size-name]-spinner' changed to 'size-[size-name]'.
Classes '[status-name]-spinner' changed to 'status-[status-name]'.

NbSpinnerComponent 'xxsmall' and 'xxlarge' getters removed.

[nnixaa]

For sizes example let's put colored spinner, as otherwise you can barely see it

[yggg]

@nnixaa Maybe it's better to change default circle color or spinner background?
Done in 092f827.

[codecov]

Codecov Report

Merging #1351 into next will decrease coverage by 0.03%.
The diff coverage is 94.73%.

@@            Coverage Diff             @@
##             next    #1351      +/-   ##
==========================================
- Coverage   81.89%   81.85%   -0.04%     
==========================================
  Files         237      237              
  Lines        7256     7230      -26     
  Branches      628      628              
==========================================
- Hits         5942     5918      -24     
+ Misses       1126     1124       -2     
  Partials      188      188

Impacted Files	Coverage Δ
...work/theme/components/spinner/spinner.component.ts	100% <100%> (+3.84%)	⬆️
...work/theme/components/spinner/spinner.directive.ts	34.21% <75%> (ø)	⬆️