feat: Print the formatted bytecode size on forc build (#6214)

## Description

Users can see the bytecode size for every compiled package using the
`--verbose` flag with `forc build`.

The PR makes it so they see the total bytecode size by default without
verbose mode in the `Finished` status message.

For workspaces, the bytecode size is the sum of all of the built
packages' bytecode.


![image](https://github.com/FuelLabs/sway/assets/47993817/5a09337f-95e8-4157-b9da-28371fb95a1e)

## Checklist

- [ ] I have linked to any relevant issues.
- [ ] I have commented my code, particularly in hard-to-understand
areas.
- [ ] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [ ] If my change requires substantial documentation changes, I have
[requested support from the DevRel
team](https://github.com/FuelLabs/devrel-requests/issues/new/choose)
- [ ] I have added tests that prove my fix is effective or that my
feature works.
- [ ] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [ ] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [ ] I have requested a review from the relevant team or maintainers.

forc-pkg/Cargo.toml

@@ -11,6 +11,7 @@ repository.workspace = true
 [dependencies]
 ansi_term = "0.12"
 anyhow = "1"
+byte-unit = "5.1.4"
 cid = "0.10"
 forc-tracing = { version = "0.61.2", path = "../forc-tracing" }
 forc-util = { version = "0.61.2", path = "../forc-util" }

forc-pkg/src/pkg.rs

@@ -9,6 +9,7 @@ use crate::{
     BuildProfile,
 };
 use anyhow::{anyhow, bail, Context, Error, Result};
+use byte_unit::{Byte, UnitType};
 use forc_tracing::{println_action_green, println_warning};
 use forc_util::{
     default_output_directory, find_file_name, kebab_to_snake_case, print_compiling,
@@ -497,7 +498,11 @@ impl BuiltPackage {
         let json_abi_path = output_dir.join(program_abi_stem).with_extension("json");
         self.write_json_abi(&json_abi_path, minify)?;
 
-        debug!("      Bytecode size: {} bytes", self.bytecode.bytes.len());
+        debug!(
+            "      Bytecode size: {} bytes ({})",
+            self.bytecode.bytes.len(),
+            format_bytecode_size(self.bytecode.bytes.len())
+        );
         // Additional ops required depending on the program type
         match self.tree_type {
             TreeType::Contract => {
@@ -2107,6 +2112,12 @@ fn profile_target_string(profile_name: &str, build_target: &BuildTarget) -> Stri
     };
     format!("{profile_name} [{}] target(s)", targets.join(" + "))
 }
+/// Returns the size of the bytecode in a human-readable format.
+pub fn format_bytecode_size(bytes_len: usize) -> String {
+    let size = Byte::from_u64(bytes_len as u64);
+    let adjusted_byte = size.get_appropriate_unit(UnitType::Decimal);
+    adjusted_byte.to_string()
+}
 
 /// Check if the given node is a contract dependency of any node in the graph.
 fn is_contract_dependency(graph: &Graph, node: NodeIx) -> bool {
@@ -2173,12 +2184,17 @@ pub fn build_with_options(build_options: &BuildOpts) -> Result<Built> {
         },
     )?;
     let output_dir = pkg.output_directory.as_ref().map(PathBuf::from);
+    let total_size = built_packages
+        .iter()
+        .map(|(_, pkg)| pkg.bytecode.bytes.len())
+        .sum::<usize>();
 
     println_action_green(
         "Finished",
         &format!(
-            "{} in {:.2}s",
+            "{} [{}] in {:.2}s",
             profile_target_string(&build_profile.name, build_target),
+            format_bytecode_size(total_size),
             build_start.elapsed().as_secs_f32()
         ),
     );
@@ -2294,6 +2310,7 @@ pub fn build(
 
     let mut lib_namespace_map = HashMap::default();
     let mut compiled_contract_deps = HashMap::new();
+
     for &node in plan
         .compilation_order
         .iter()