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

src/SharedDefs.hpp

@@ -52,4 +52,8 @@ struct SHyprCtlCommand {
     std::function<std::string(eHyprCtlOutputFormat, std::string)> fn;
 };
 
+typedef int64_t                                              WINDOWID;
+typedef int64_t                                              MONITORID;
+typedef int64_t                                              WORKSPACEID;
+
 typedef std::function<void(void*, SCallbackInfo&, std::any)> HOOK_CALLBACK_FN;