libSceNpSessionSignaling technical debt

sceNpSessionSignalingGetConnectionFromPeerAddress (libSceNpSessionSignaling) - imported by PPSA01289 and added without an implementation; unknown signature
sceNpSessionSignalingGetMemoryInfo (libSceNpSessionSignaling) - unknown signature
sceNpSessionSignalingGetConnectionStatistics (libSceNpSessionSignaling) - unknown signature
sceNpSessionSignalingGetConnectionStatus (libSceNpSessionSignaling) - (int32 context id, int32 connection id, int32* status, SceNetInAddr* peer address, uint16* peer port) is ASTRO BOT's (PPSA21564 01.007.000) call at 0x30622B: the context id from a 32-bit field, the connection id, three stack outputs, a negative result taken as an error, then the address passed to sceNetInetNtop(AF_INET, ...) and the port to sceNetNtohs. It matches PS4's sceNpSignalingGetConnectionStatus. The title reaches it only for a connection id from the signaling library, which offline never hands one out. No session ever activates offline, so every connection id answers CONN_NOT_FOUND (0x8055330C, from shadPS4) without writing the outputs, and a null status answers INVALID_ARGUMENT. The context id is not checked, as contexts are not tracked. The console's answer for an unknown context or connection is unverified