Add content for SQLite (#3017)

* Update 100-sqlite.md

Added Sqlite description from pub.dev

* Update content/roadmaps/117-flutter/content/109-storage/100-sqlite.md

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

content/roadmaps/117-flutter/content/109-storage/100-sqlite.md

@@ -1 +1,6 @@
-# Sqlite
+# SQLite
+
+SQLite is an open-source, lightweight relational database management system (RDBMS) used to store and manage data. It is written in C and self-contained, meaning it does not require a separate server process or system. SQLite is commonly used in mobile applications, embedded systems, and web browsers and is also supported by many programming languages. It is a popular choice for databases because it is easy to use and does not require a lot of setup or configuration.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://pub.dev/packages/sqflite'>sqflite - pub.dev package</BadgeLink>