Extract cmd dispatch code from src/delete/main.rs to delete::cli module.

Changes:
- Introduce cli::dispatch_cmd() function which just delegate to delete function.

src/delete/cli.rs

@@ -1,5 +1,7 @@
 use structopt::StructOpt;
 use std::path::PathBuf;
+use hagrid_database::KeyDatabase;
+use crate::delete;
 
 #[derive(Debug, StructOpt)]
 #[structopt(
@@ -23,3 +25,7 @@ pub(crate)  struct Opt {
     #[structopt(long = "all")]
     pub(crate) all: bool,
 }
+
+pub(crate) fn dispatch_cmd(opts: &Opt, db: &KeyDatabase) -> anyhow::Result<()> {
+    delete(&db, &opts.query.parse()?, opts.all_bindings, opts.all)
+}

src/delete/main.rs

@@ -20,9 +20,10 @@ fn main() {
 }
 
 fn real_main() -> anyhow::Result<()> {
-    let opt = cli::Opt::from_args();
-    let db = KeyDatabase::new_file(opt.base.canonicalize()?)?;
-    delete(&db, &opt.query.parse()?, opt.all_bindings, opt.all)
+    let opt = &cli::Opt::from_args();
+    let db = &KeyDatabase::new_file(opt.base.canonicalize()?)?;
+
+    cli::dispatch_cmd(opt, db)
 }
 
 fn delete(