Add k6 (#2055)

* Add: k6

Signed-off-by: NaveenKumar Namachivayam <catch.nkn@gmail.com>

* Update: Website

Signed-off-by: NaveenKumar Namachivayam ⚡ <catch.nkn@gmail.com>

* Update content/roadmaps/113-qa/content/104-qa-non-functional-testing/100-load-and-performance-testing/104-k6.md

Signed-off-by: NaveenKumar Namachivayam <catch.nkn@gmail.com>
Signed-off-by: NaveenKumar Namachivayam ⚡ <catch.nkn@gmail.com>
Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/113-qa/content/104-qa-non-functional-testing/100-load-and-performance-testing/104-k6.md

@@ -1 +1,9 @@
-# K6
+# k6
+
+Grafana k6 is an open-source load testing tool that makes performance testing easy and productive for engineering teams. k6 is free, developer-centric, and extensible.
+
+Using k6, you can test the reliability and performance of your systems and catch performance regressions and problems earlier. k6 will help you to build resilient and performant applications that scale.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='blue' badgeText='Official Website' href='https://k6.io/'>k6 Website</BadgeLink>
+<BadgeLink badgeText='Course' colorScheme='green' href='https://www.youtube.com/playlist?list=PLJ9A48W0kpRJKmVeurt7ltKfrOdr8ZBdt'>Learn k6</BadgeLink>