Add basic spinner support

Cargo.toml

@@ -42,6 +42,7 @@ serde_json = "1.0"
 serde_yaml = "0.9"
 sha2 = "0.10"
 snafu = "0.7"
+spinoff = "0.8.0"
 stackable-operator = { git = "https://github.com/stackabletech/operator-rs.git", tag = "0.47.0" }
 tera = "1.18"
 tokio = { version = "1.29.0", features = ["rt-multi-thread", "macros", "fs", "process"] }

rust/stackablectl/Cargo.toml

@@ -27,6 +27,7 @@ serde_json.workspace = true
 serde_yaml.workspace = true
 serde.workspace = true
 snafu.workspace = true
+spinoff.workspace = true
 tera.workspace = true
 tokio.workspace = true
 tracing-subscriber.workspace = true

rust/stackablectl/src/output/mod.rs

@@ -4,6 +4,7 @@ use std::{
 };
 
 use snafu::{ResultExt, Snafu};
+use spinoff::{spinners, Color, Spinner};
 use tera::Tera;
 
 mod error;
@@ -88,11 +89,11 @@ where
     }
 }
 
-#[derive(Debug)]
 pub struct Output<C>
 where
     C: ContextExt,
 {
+    progress: Option<Spinner>,
     renderer: Tera,
     context: C,
 }
@@ -106,20 +107,22 @@ where
         let no_color = use_colored_output(!no_color);
         context.set_no_color(no_color);
 
-        Ok(Self { renderer, context })
+        Ok(Self {
+            progress: None,
+            renderer,
+            context,
+        })
     }
 
-    fn create_renderer() -> Result<Tera> {
-        let mut renderer = Tera::default();
-
-        renderer
-            .add_raw_templates(vec![
-                ("result", include_str!("templates/result.tpl")),
-                ("error", include_str!("templates/error.tpl")),
-            ])
-            .context(CreationSnafu)?;
+    pub fn enable_progress(&mut self, initial_message: String) {
+        self.progress
+            .get_or_insert(Spinner::new(spinners::Dots, initial_message, Color::Green));
+    }
 
-        Ok(renderer)
+    pub fn set_progress_message(&mut self, message: String) {
+        if let Some(progress) = self.progress.as_mut() {
+            progress.update_text(message)
+        }
     }
 
     pub fn render(self) -> Result<String> {
@@ -134,6 +137,19 @@ where
                 .context(RenderSnafu),
         }
     }
+
+    fn create_renderer() -> Result<Tera> {
+        let mut renderer = Tera::default();
+
+        renderer
+            .add_raw_templates(vec![
+                ("result", include_str!("templates/result.tpl")),
+                ("error", include_str!("templates/error.tpl")),
+            ])
+            .context(CreationSnafu)?;
+
+        Ok(renderer)
+    }
 }
 
 impl<C> Deref for Output<C>