More refactoring and bug fixes

- Added `libhttp` and `librest_api` targets to CMakeLists.txt
- Added examples for `libhttp` and `librest_api` in examples directory
- Added `cache` and `add` commands
- Added documentation for `libhttp` and `librest_api`
- Added all available HTTP response codes to REST API
- Changed how `bin/compile.sh` works (must supply args to build)

include/plugin.hpp

@@ -1,12 +1,12 @@
-
-
+#pragma once
+#include "types.hpp"
 #include <string>
 
 namespace gdpm::plugin{
 	struct info{
-		std::string name;
-		std::string description;
-		std::string version;
+		string name;
+		string description;
+		string version;
 	};
 	extern int init(int argc, char **argv);
 	extern int set_name(const char *name);