You can, depending on the Minecraft version.
For 1.16.4 and 1.16.5 it is available in the addon marketplace. (Esc > Addons).
For 1.17, you cannot add it yet, because it's not been released yet.
For any version lower than 1.16.4, you cannot add it (unless forge)
For lower versions of forge, you can download it from their website and add it to your mods folder