Add a K2V client library and CLI (#303)

lib.rs could use getting split in modules, but I'm not sure how exactly

Co-authored-by: trinity-1686a <trinity@deuxfleurs.fr>
Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/303
Co-authored-by: trinity-1686a <trinity.pointard@gmail.com>
Co-committed-by: trinity-1686a <trinity.pointard@gmail.com>

src/util/formater.rs

@@ -0,0 +1,28 @@
+pub fn format_table(data: Vec<String>) {
+	let data = data
+		.iter()
+		.map(|s| s.split('\t').collect::<Vec<_>>())
+		.collect::<Vec<_>>();
+
+	let columns = data.iter().map(|row| row.len()).fold(0, std::cmp::max);
+	let mut column_size = vec![0; columns];
+
+	let mut out = String::new();
+
+	for row in data.iter() {
+		for (i, col) in row.iter().enumerate() {
+			column_size[i] = std::cmp::max(column_size[i], col.chars().count());
+		}
+	}
+
+	for row in data.iter() {
+		for (col, col_len) in row[..row.len() - 1].iter().zip(column_size.iter()) {
+			out.push_str(col);
+			(0..col_len - col.chars().count() + 2).for_each(|_| out.push(' '));
+		}
+		out.push_str(row[row.len() - 1]);
+		out.push('\n');
+	}
+
+	print!("{}", out);
+}

src/util/lib.rs

@@ -8,6 +8,7 @@ pub mod config;
 pub mod crdt;
 pub mod data;
 pub mod error;
+pub mod formater;
 pub mod metrics;
 pub mod persister;
 pub mod sled_counter;