fix: resolve PostgreSQL type mismatches and add willexecutor debug logging

- Fix get_next_address_index: use try_get::<i32> for PG SERIAL/INTEGER columns
- Fix search_tx: use try_get::<i32> for PG status column
- Fix execute_insert: parse locktime (String→i64) and in_vout (String→i32)
  before binding to PG INTEGER columns
- Fix execute_insert: bind tbl_out vout as i32, amount as String for PG
- Fix save_new_address: cast xpub i64 to i32 for PG INTEGER column
- Fix get_pending_txs: cast i64 bind params to i32, use try_get::<i32> for reads
- Fix get_stats: use try_get::<i32> for all numeric PG INTEGER columns
- Add trace logging in parse_request_transactions for xpub address matching
- Add trace logging in get_all_addresses_by_xpub for query debugging

Cargo.toml

@@ -20,7 +20,7 @@ hex = 			{ version = "0.4.3" }
 log = 			{ version = "0.4.21" }
 serde = 		{ version = "1.0.152", features = ["derive"] }
 serde_json = 		{ version = "1.0.116" }
-sqlite = 		{ version = "0.34.0" }
+sqlx = 			{ version = "0.8", features = ["runtime-tokio", "sqlite", "postgres", "chrono"] }
 regex = 		{ version = "1.10.4" }
 tokio = 		{ version = "1", features = ["rt", "net","macros","rt-multi-thread"] }
 url = 			{ version = "2" }