feat: implement 'grab' for Handful

01.workspace/oxidice_lib/src/imp/handful_grab.rs

@@ -1,7 +1,11 @@
 use crate::*;
 
 impl Handful {
-    pub fn grab(dice: u16, sides: u16) -> Self {
-        todo!()
+    pub fn grab(dice_num: u16, sides: u16) -> Self {
+        let mut dice = Vec::<Die>::new();
+        for _ in 1..=dice_num {
+            dice.push(Die::new(sides));
+        }
+        Self { dice }
     }
 }

01.workspace/oxidice_lib/src/str/handful.rs

@@ -1,7 +1,9 @@
 use crate::*;
 
 #[derive(Debug, Default, PartialEq, Clone)]
-pub struct O {}
+pub struct O {
+    pub(crate) dice: Vec<Die>,
+}
 
 // impl std::fmt::Display for O {
 // fn fmt(&self, _f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {