Add primitive types resources

* Update 100-primitive-types.md

* Update content/roadmaps/106-javascript/content/102-javascript-datatypes/100-primitive-types.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/106-javascript/content/102-javascript-datatypes/100-primitive-types.md

@@ -1 +1,15 @@
-# Primitive types
+# Primitive Types
+
+In JavaScript, a primitive (primitive value, primitive data type) is data that is not an object and has no methods or properties. There are 7 primitive data types:
+
+- `string`
+- `number`
+- `bigint`
+- `boolean`
+- `undefined`
+- `Symbol`
+- `null`
+
+Most of the time, a primitive value is represented directly at the lowest level of the language implementation.
+
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://developer.mozilla.org/en-US/docs/Glossary/Primitive'>Primitive</BadgeLink>