fix(async): 尝试修复 #49 中提到的问题

impl/src/main/java/cc/carm/lib/easysql/action/query/QueryActionImpl.java

@@ -53,10 +53,12 @@ public class QueryActionImpl extends AbstractSQLAction<SQLQuery> implements Quer
 
     @Override
     public void executeAsync(SQLHandler<SQLQuery> success, SQLExceptionHandler failure) {
-        try (SQLQueryImpl query = execute()) {
-            if (success != null) success.accept(query);
-        } catch (SQLException exception) {
-            handleException(failure, exception);
-        }
+        getManager().getExecutorPool().submit(() -> {
+            try (SQLQueryImpl query = execute()) {
+                if (success != null) success.accept(query);
+            } catch (SQLException exception) {
+                handleException(failure, exception);
+            }
+        });
     }
 }

impl/src/main/java/cc/carm/lib/easysql/manager/SQLManagerImpl.java

@@ -89,10 +89,14 @@ public class SQLManagerImpl implements SQLManager {
         return LOGGER;
     }
 
-    public ExecutorService getExecutorPool() {
+    public @NotNull ExecutorService getExecutorPool() {
         return executorPool;
     }
 
+    public void setExecutorPool(@NotNull ExecutorService executorPool) {
+        this.executorPool = executorPool;
+    }
+
     @Override
     public @NotNull DataSource getDataSource() {
         return this.dataSource;