feat(meta): add about meta-command

src/meta_commands.rs

@@ -1,12 +1,16 @@
+use crate::branding;
+
 #[derive(Debug, Eq, PartialEq)]
 pub enum MetaCommand {
     Exit,
+    About,
 }
 
 impl std::fmt::Display for MetaCommand {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         match self {
             MetaCommand::Exit => write!(f, "exit"),
+            MetaCommand::About => write!(f, "about"),
         }
     }
 }
@@ -19,6 +23,10 @@ impl MetaCommand {
     pub fn execute(&self) -> MetaCommandExecuteResult {
         match self {
             MetaCommand::Exit => MetaCommandExecuteResult { should_exit: true },
+            MetaCommand::About => {
+                print!("{}", branding::about_msg());
+                MetaCommandExecuteResult { should_exit: false }
+            }
         }
     }
 }