Support custom template

[t-ho]

No description provided.

[codecov-io]

Codecov Report

Merging #63 into master will decrease coverage by 0.12%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #63      +/-   ##
==========================================
- Coverage   98.75%   98.63%   -0.13%     
==========================================
  Files           7        7              
  Lines         402      365      -37     
  Branches       84       76       -8     
==========================================
- Hits          397      360      -37     
  Partials        5        5

Impacted Files	Coverage Δ
projects/ngx-ui-loader/src/lib/utils/functions.ts	100% <ø> (ø)	⬆️
...-ui-loader/src/lib/core/ngx-ui-loader.component.ts	100% <100%> (ø)	⬆️
...gx-ui-loader/src/lib/core/ngx-ui-loader.service.ts	97.04% <100%> (-0.25%)	⬇️

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