new icon: testingicon (original, plain)

[Thomas-Boi]

New icon section

Double check these details before you open a PR

• PR does not match another non-stale PR currently opened
• PR name matches the format new icon: Icon name (versions separated by comma). More details here
• The PR's base is the develop branch.
• Your icons are inside a folder as seen here
• SVG matches the standards laid out here
• A new object is added in the devicon.json file as seen here

Link to prove your SVG is correct and up-to-date

---

New feature section

Double check these details before you open a PR

• PR does not match another non-stale PR currently opened
• PR name matches the format New Feature: a brief description of feature

This PR adds/fixes

Notes

[github-actions]

Hi!

I'm the check-bot and we have some issues with your PR:

Check our CONTRIBUTING guide for more details regarding these errors.

Please address these issues. When you update this PR, I will check your SVGs again.

Thanks for your help,
SVG-Checker Bot 😄

[github-actions]

Hi!

I'm the check-bot and we have some issues with your PR:

Error found in 'devicon.json' for 'testingicon' entry: 
- missing key: 'aliases'.

Check our CONTRIBUTING guide for more details regarding these errors.

Please address these issues. When you update this PR, I will check your SVGs again.

Thanks for your help,
SVG-Checker Bot 😄

[github-actions]

Hi!

I'm the check-bot and we have some issues with your PR:

Error found in 'devicon.json' for 'testingicon' entry: 
- Invalid version name in 'svg': {}. Must match regexp: (original|plain|line)(-wordmark)?
- missing key: 'aliases'.

Error in /home/runner/work/devicon/devicon/icons/testingicon/testingicon-origi.svg:
- SVG file name didn't match our pattern of `name-(original|plain|line)(-wordmark)?.svg`

Check our CONTRIBUTING guide for more details regarding these errors.

Please address these issues. When you update this PR, I will check your SVGs again.

Thanks for your help,
SVG-Checker Bot 😄