feat: add Milton Friedman quotes

src/builtins/quote.rs

@@ -5,7 +5,13 @@ use crate::error::ShellError;
 
 pub struct Quote;
 
-const QUOTES: &[(&str, &str)] = &[("test quote", "david")];
+const QUOTES: &[(&str, &str)] = &[
+    ("A society that puts equality before freedom will get neither. A society that puts freedom before equality will get a high degree of both.", "Milton Friedman"),
+    ("One of the great mistakes is to judge policies and programs by their intentions rather than their results.","Milton Friedman"),
+    ("Nothing is as permanent as a temporary government program.","Milton Friedman"),
+    ("Underlying most arguments against the free market is a lack of belief in freedom itself.","Milton Friedman"),
+    ("I think that the Internet is going to be one of the major forces for reducing the role of government.","Milton Friedman")
+];
 
 impl Builtin for Quote {
     fn execute(&mut self, _: &mut BuiltinConfig, _: Vec<String>) -> Result<(), ShellError> {