Added resources for the Java fundamantals (#1727)

* Added resources for the Java fundamantals

Basic Syntax - Proposed a G2G blog post as read and an intro to java syntax youtube video as watch.

* Update content/roadmaps/110-java/content/100-java-fundamentals/100-basic-syntax.md

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

content/roadmaps/110-java/content/100-java-fundamentals/100-basic-syntax.md

@@ -1 +1,7 @@
-# Basic syntax
+# Basic Syntax
+
+Understanding the basics is the key to a solid foundation. In this section, learn the basic terminologies, naming conventions, reserved words, conditions, functions, data structures, OOP, packages, etc.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.geeksforgeeks.org/java-basic-syntax/'>Basic Java Syntax</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=81piDKqPxjQ'>Java - Basic Syntax</BadgeLink>