Added JSdocs for tile component

[Blackbaud-DeniseCisneros]

Added JSdocs content to Development tab for tiles

[codecov]

Codecov Report

Merging #70 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #70   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           16        16           
  Lines          418       418           
  Branches       101       101           
=========================================
  Hits           418       418           

Impacted Files	Coverage Δ
...s/tiles/tile-dashboard/tile-dashboard.component.ts	100.00% <ø> (ø)
...les/tiles/tile-dashboard/tile-dashboard.service.ts	100.00% <ø> (ø)
...rc/app/public/modules/tiles/tile/tile.component.ts	100.00% <ø> (ø)

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[Blackbaud-DeniseCisneros]

/azp run

[Blackbaud-DeniseCisneros]

/azp run

[blackbaud-ado]

Preview build at https://developer.blackbaud.com/skyux-tiles?_sp.spa=pr-tiles-migration