sys_prx: implement get_module_id_by_name, module_info_v2

[InvoxiPlayGames]

Implements 2 sys_prx features:

• sys_prx_get_module_id_by_name, self explanatory
• version 2 of sys_prx_module_info, which includes addresses to the import/export stub tables

[elad335]

From sys_prx_module_info disassembly:

1. This is the check that checks the size member, it checks only 0x48 bytes and return EINVAL if not matches:

3. All normal return paths do not include a call to output data beyond 0x48 bytes:

[InvoxiPlayGames]

In 4.90 (and 4.91, but I don't have it on-hand) it looks to check for 0x58 first before checking 0x48.

From 4.90 disassembly, it checks 0x58, then 0x48, then returns EINVAL.