internal: introduce new types to avoid unsigned int rollover and signed int overflow (#7216)

* framebuffer: avoid gluint overflow

GLuint was being initialized to -1 and rolling over to unsigned int max,
its defined behaviour but very unnecessery. add a bool and use it for
checking if allocated or not.

* opengl: avoid gluint rollover

-1 rolls over to unsigned int max, use 0xFF instead.

* core: big uint64_t to int type conversion

there were a few uint64_t to int implicit conversions overflowing int
and causing UB, make all monitor/workspaces/windows use the new
typedefs. also fix the various related 64 to 32 implicit conversions
going around found with -Wshorten-64-to-32

hyprctl/main.cpp

@@ -113,7 +113,7 @@ int rollingRead(const int socket) {
 
     constexpr size_t              BUFFER_SIZE = 8192;
     std::array<char, BUFFER_SIZE> buffer      = {0};
-    int                           sizeWritten = 0;
+    long                          sizeWritten = 0;
     std::cout << "[hyprctl] reading from socket following up log:" << std::endl;
     while (!sigintReceived) {
         sizeWritten = read(socket, buffer.data(), BUFFER_SIZE);