tpu-client: Move send_messages_with_spinner from program (#20960)

We have too many ways of sending transactions, and too many
reimplementations of the same logic all over the place.

The program deploy logic and stake-o-matic currently make the
most use of the TPU client, so this merges their implementations into
one place to be reused by both.  Yay for consolidation!

client/src/spinner.rs

@@ -0,0 +1,11 @@
+//! Spinner creator
+
+use indicatif::{ProgressBar, ProgressStyle};
+
+pub(crate) fn new_progress_bar() -> ProgressBar {
+    let progress_bar = ProgressBar::new(42);
+    progress_bar
+        .set_style(ProgressStyle::default_spinner().template("{spinner:.green} {wide_msg}"));
+    progress_bar.enable_steady_tick(100);
+    progress_bar
+}