added save and load json

src/lib/MainWrapper.svelte

@@ -158,16 +158,36 @@
         {/each}
       </table>
       <div class="save-load-clear-group">
-        <button>Save</button>
-        <button>Load</button><br />
+        <button
+          on:click={() => {
+            invoke("save_json", { jsonContent: pokemonDataArray})
+            .then(() => {})
+            .catch((err) => console.log(err));
+          }}
+        >
+          Save
+        </button>
+        <button
+          on:click={() => {
+            invoke("load_json").then((d) => {
+              pokemonDataArray = d;
+              pokemonData = pokemonDataArray[index];
+            })
+            .catch((e) => console.log(e));
+          }}
+        >
+          Load
+        </button><br />
         <button
           on:click={() => {
             pokemonData = undefined;
             pokemonDataArray = [];
             index = 0;
             myValue = undefined;
-          }}>Clear</button
+          }}
         >
+          Clear
+        </button>
       </div>
     </div>
     <div class="display-data">