Add scaleFontSize helper

[nicoecheza]

Copy of CSS calc function but just for vw/vh units

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Pages

Latest commit:	e88221c
Status:	✅  Deploy successful!
Preview URL:	https://662f2095.js-sdk-toolchain.pages.dev
Branch Preview URL:	https://add-scaling-font-helper.js-sdk-toolchain.pages.dev

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[github-actions]

Test this pull request

• The @dcl/sdk package can be tested in scenes by running

  npm install "https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/add/scaling-font-helper/dcl-sdk-7.4.3-7959953257.commit-8f67692.tgz"

• To test with npx init

  export SDK_COMMANDS="https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/add/scaling-font-helper/dcl-sdk-commands-7.4.3-7959953257.commit-8f67692.tgz"
  npx $SDK_COMMANDS init

• The @dcl/inspector package can be tested by visiting this url

  • Or by installing it via NPM

  npm install "https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/add/scaling-font-helper/@dcl/inspector/dcl-inspector-7.4.3-7959953257.commit-8f67692.tgz"

• The /changerealm command to test test in-world

  /changerealm https://sdk-team-cdn.decentraland.org/ipfs/add/scaling-font-helper-e2e
  

• You can preview this build entering:
  https://playground.decentraland.org/?sdk-branch=add/scaling-font-helper

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e16c799) 67.01% compared to head (e88221c) 67.09%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #891      +/-   ##
==========================================
+ Coverage   67.01%   67.09%   +0.08%     
==========================================
  Files         523      523              
  Lines       16236    16276      +40     
  Branches     2059     2075      +16     
==========================================
+ Hits        10880    10920      +40     
  Misses       5023     5023              
  Partials      333      333              

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[gonpombo8]

It'll greate if we can use this values directly on all the properties that accept % and numbers like width, height, fontSize,etc.

<UiEntity uiTransform={{ width: '100vw', fontSize: '1vw' }} />