refactor table system (#132)

* init table trait

* add shrink_col_index and max_width method to Table trait

* make unicodes work when shrinking

* improve readability of the table

* replace old table system with new one

* update changelog

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "The CLI email client.";
+  description = "📫 CLI email client";
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";