feat: add memory managment

Author: ExploitEngineer

part9 (Advanced Topics)/Memory-Managment/memory-managment.js

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+/*
+INFO: What is Memory Lifecycle in JavaScript ?
+JavaScript, like most high-level languages, handles memory automatically.
+
+Memory lifecycle has 3 phases:
+1. Allocation: memory is reserved when variables or functions are declared.
+2. Usage: you work with that memory (access/change variables, call functions).
+3. Release (Garbage Collection): JS automatically frees memory that's no longer used.
+*/
+
+// Exmaple
+function greet() {
+  const name = "Rafay"; // Allocation
+  console.log("Hello", name); // Usage
+} // when function ends, memory for `name` is released
+
+/*
+INFO: What is Garbage Collection ?
+Garbage Collection is the process of automatically freeing memory that's no longer reachalbe/used in the program.
+JavaScript uses a garbage collector to scan memory and clean up values that can't be reached anymore.
+*/