Add vita environment (#22)

* vita: initial port

* vita: implement events, enable input thread

* vita: gethostbyname

* vita: Enable audio

* vita: Fix thread crash on discoonect process

* vita: Handle cannot create thread

* vita: now use newlib's socket apis

* vita: Refactoring for moonlight-stream/moonlight-common-c

* Fix review things

https://github.com/moonlight-stream/moonlight-common-c/pull/22#pullrequestreview-2436093

- vita may not support IPv6; so add LC_ASSERT them.
- define inet_ntop to sceNetInetNtop
- guard about failure of sceKernelCreateMutex or sceKernelCreateCond
- remove meanless macros

https://github.com/moonlight-stream/moonlight-common-c/pull/22#pullrequestreview-2444677

- !*mutex to *mutex
- remove useless LC_ASSERT then change to use inet_ntop
  in vita system not defined `sockaddr_in6`, so just use `sockaddr_in` instead this.

https://github.com/moonlight-stream/moonlight-common-c/pull/22#pullrequestreview-2445642

- define sin6_addr

src/PlatformSockets.h

@@ -14,6 +14,16 @@
 typedef int SOCK_RET;
 typedef int SOCKADDR_LEN;
 
+#else
+#if defined(__vita__)
+#include <psp2/net/net.h>
+#include <enet/enet.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/select.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <errno.h>
 #else
 #include <sys/types.h>
 #include <sys/socket.h>
@@ -24,6 +34,7 @@ typedef int SOCKADDR_LEN;
 #include <netdb.h>
 #include <errno.h>
 #include <signal.h>
+#endif
 
 #define ioctlsocket ioctl
 #define LastSocketError() errno
@@ -36,6 +47,17 @@ typedef ssize_t SOCK_RET;
 typedef socklen_t SOCKADDR_LEN;
 #endif
 
+#if defined(__vita__)
+#define TCP_NODELAY SCE_NET_TCP_NODELAY
+#define INADDR_ANY SCE_NET_INADDR_ANY
+
+#define sockaddr_in6 sockaddr_in
+#define sin6_addr sin_addr
+#define sin6_port sin_port
+#define INET6_ADDRSTRLEN 128
+#define inet_ntop sceNetInetNtop
+#endif
+
 #define LastSocketFail() ((LastSocketError() != 0) ? LastSocketError() : -1)
 
 // IPv6 addresses have 2 extra characters for URL escaping
@@ -48,4 +70,4 @@ int enableNoDelay(SOCKET s);
 int recvUdpSocket(SOCKET s, char* buffer, int size);
 void shutdownTcpSocket(SOCKET s);
 void setRecvTimeout(SOCKET s, int timeoutSec);
-void closeSocket(SOCKET s);
+void closeSocket(SOCKET s);