feat: store arrays

[enitrat]

Here is an example of how to write the StorageAccess implementation for felt252.

@julio4 Please review!

[julio4]

Nice example!

StorageAccessFelt252Array is missing these traits implementation in v1.1.0:

fn read_at_offset_internal(
    address_domain: u32, base: StorageBaseAddress, offset: u8
) -> SyscallResult<T>;
fn write_at_offset_internal(
    address_domain: u32, base: StorageBaseAddress, offset: u8, value: T
) -> SyscallResult<()>;
fn size_internal(value: T) -> u8;

Is it ok to not implement those?

Should we add missing imports as well?

[enitrat]

Is it ok to not implement those?

It looks like this is new from 2.0.0-rc. For now, let's not include them until we change the contract syntax

[julio4]

It looks like this is new from 2.0.0-rc. For now, let's not include them until we change the contract syntax

That's right, my cairo lsp wasn't correctly set up.
All good then!