new icon: fiber (original, plain, line)

[canaleal]

Double check these details before you open a PR

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

This PR closes #1971

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

• Github
• Fiber SVG
• Github Branding

The original, plain, and line svgs can be used for the wordmarks using aliases. The color #00acd7 was selected for the font SVGs as it's the main Go Fiber color.

[Ryrden]

Why hasn't this PR been merged yet?

right now I need this icon.

@ConX @Snailedlt @lunatic-fox Could you guys review, please?