Add full support for Arabic locale (ar-SA)

[tydonelson]

The Arabic locale (ar-SA) is missing from a few locale menus in the extension. These should be added to support Arabic skill building and simulation in the extension.

Initial proposed changes from Faisal Banaeamah:

The changes are simply to add Arabic (SA) locale to the following places:

In Toolkit UI, Skills -> Interaction model -> Download

• Edit file: \media\interactionModelSync\interactionModelSync.html
• In line # 33, append to locale options an entity for Arabic locale as:
  • <option value='ar-SA'>Arabic (SA)</option>

In Toolkit UI, Skills -> Test skill -> Open simulator

• Edit file: media\simulateSkill\simulateSkill.js
• In line # 530, append to localesList an entity for Arabic locale as below:
  • "ar-SA": `<option value='ar-SA'>Arabic (SA)</option>`,