[P2] Not efficient memory usage, need improvement.

[zephyr-atomi]

• profile the usage of memory
• Array / Record are suspicious to use hashmap. In the regular usage, they mostly use a fixed length array. Need to confirm and figure out a new way of memory usage.

[kareled]

Well, not only that, but also there is a question if it's possible to support completely static based representation of the OD/runtime hence avoid any form of dynamic allocation(s).