add delete dict operations

src-core/examples/search_yomitan.rs

@@ -0,0 +1,19 @@
+use std::time::Instant;
+
+use anyhow::Ok;
+use cjdic2_core::AppService;
+
+mod common;
+use common::get_db_dir;
+
+fn main() -> Result<(), anyhow::Error> {
+    let service = AppService::new(get_db_dir())?;
+
+    let start = Instant::now();
+    let rs = service.search_yomitan("擦る", "する", 10, 0)?;
+    println!("{:#?}", rs);
+    println!("n={}", rs.len());
+    println!("[{:.2?}]", start.elapsed());
+
+    Ok(())
+}