Add public Zygisk API

Still WIP

native/jni/zygisk/zygisk.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <stdint.h>
+#include <jni.h>
+
+#define INJECT_ENV_1 "MAGISK_INJ_1"
+#define INJECT_ENV_2 "MAGISK_INJ_2"
+
+enum : int {
+    ZYGISK_SETUP,
+    ZYGISK_GET_APPINFO,
+    ZYGISK_UNMOUNT,
+    ZYGISK_GET_LOG_PIPE,
+};
+
+// Unmap all pages matching the name
+void unmap_all(const char *name);
+
+// Remap all matching pages with anonymous pages
+void remap_all(const char *name);
+
+// Get library name + offset (from start of ELF), given function address
+uintptr_t get_function_off(int pid, uintptr_t addr, char *lib);
+
+// Get function address, given library name + offset
+uintptr_t get_function_addr(int pid, const char *lib, uintptr_t off);
+
+struct AppInfo {
+    bool is_magisk_app;
+    bool on_denylist;
+};
+
+void self_unload();
+void hook_functions();
+bool unhook_functions();
+void remote_get_app_info(int uid, const char *process, AppInfo *info);
+int remote_request_unmount();