Validate length of text input for storage considerations.

[streamerd]

Start with improving textual expressions' size checks.

Both on front-end and backend, add an input control mechanism, where received _expression input can not exceed a string field's size on solidity. (so should reflect front-end, UTF-8 or ASCII encoded).

Some guides:

Solidity
https://docs.soliditylang.org/en/v0.8.14/internals/layout_in_storage.html#bytes-and-string
https://medium.com/hackernoon/working-with-strings-in-solidity-c4ff6d5f8008

React:
https://bobbyhadz.com/blog/react-input-character-limit