Add solutions to section 1 exercises

Author: somacdivad

ch11-modules-and-packages/1-working-with-modules/greeter.py

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+# Ch 11.1 - Modules and Packages
+# Solution to Exercise 1
+
+
+def greet(name):
+    print(f"Hello {name}!")

ch11-modules-and-packages/1-working-with-modules/main.py

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+# Ch 11.1 - Modules and Packages
+# Solution to Exercise 2
+
+import greeter
+
+
+greeter.greet("Real Python")