Add the path to the svg icons for generate the sprite with `svg-symbol-sprite-loader`

[beatrizsmerino]

The svg files in the fonts folder are also being included in the sprite.

Description in this issue:
Create a sprite with the svg from a specific folder #1

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[beatrizsmerino]

Found a solution here:
https://stackoverflow.com/questions/58391759/adding-svg-loader-to-vue-cli-project-for-a-specific-directory-only