fix: cbindgen fix (#4298)

Description
---
cbindgen was ignoring TariUtxo

Motivation and Context
---
To expose `TariUtxo` in the FFI header file

How Has This Been Tested?
---
manually

base_layer/wallet_ffi/build.rs

@@ -3,7 +3,7 @@
 
 use std::{env, path::PathBuf};
 
-use cbindgen::{Config, Language, ParseConfig, Style};
+use cbindgen::{Config, ExportConfig, Language, ParseConfig, Style};
 
 fn main() {
     let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
@@ -28,6 +28,10 @@ fn main() {
         autogen_warning: Some("// This file was generated by cargo-bindgen. Please do not edit manually.".to_string()),
         style: Style::Tag,
         cpp_compat: true,
+        export: ExportConfig {
+            include: vec!["TariUtxo".to_string()],
+            ..Default::default()
+        },
         ..Default::default()
     };
 

base_layer/wallet_ffi/wallet.h

@@ -305,6 +305,14 @@ typedef struct FeePerGramStatsResponse TariFeePerGramStats;
 
 typedef struct FeePerGramStat TariFeePerGramStat;
 
+struct TariUtxo {
+  const char *commitment;
+  uint64_t value;
+  uint64_t mined_height;
+  uint64_t mined_timestamp;
+  uint8_t status;
+};
+
 #ifdef __cplusplus
 extern "C" {
 #endif // __cplusplus