[BGS-138] [feature] add message for all rover users that Rover functionality has changed. (#2365)

Trivial. Adds a new message on start up; when the new docs are up, this
will be amended with a link to the doc.

---------

Co-authored-by: jonathanrainer <[email protected]>

Author: monkpow

src/command/dev/do_dev.rs

@@ -12,6 +12,7 @@ use rover_std::{errln, infoln, warnln};
 use semver::Version;
 use tower::ServiceExt;
 
+use super::version_upgrade_message::VersionUpgradeMessage;
 use crate::command::dev::router::config::{RouterAddress, RouterHost, RouterPort};
 use crate::command::dev::router::hot_reload::HotReloadConfigOverrides;
 use crate::command::dev::router::run::RunRouter;
@@ -39,6 +40,7 @@ impl Dev {
         override_install_path: Option<Utf8PathBuf>,
         client_config: StudioClientConfig,
     ) -> RoverResult<RoverOutput> {
+        VersionUpgradeMessage::print();
         warnln!(
             "Do not run this command in production! It is intended for local development only.\n"
         );

src/command/dev/mod.rs

@@ -9,6 +9,7 @@ mod do_dev;
 mod no_dev;
 #[cfg(feature = "composition-js")]
 mod router;
+mod version_upgrade_message;
 
 use std::net::IpAddr;
 

src/command/dev/version_upgrade_message.rs

@@ -0,0 +1,18 @@
+#![warn(missing_docs)]
+use rover_std::Style;
+
+pub struct VersionUpgradeMessage {}
+
+impl VersionUpgradeMessage {
+    pub fn print() {
+        eprintln!();
+        eprintln!(
+            "{}",
+            Style::WarningPrefix.paint("** Notice: Changes in This Release! **")
+        );
+        eprintln!("This version includes significant updates to the `rover dev` command.");
+        eprintln!("We highly recommend reviewing the updated documentation to ensure a smooth experience.");
+        eprintln!("Read more: https://www.apollographql.com/docs/rover/commands/dev");
+        eprintln!();
+    }
+}