There's no such installer, unfortunately. That's partially good since I think it should be up to personal preference what callouts and plugins you'd like to include in your game. Some prefer the super-realistic policing experience while some prefer a more relaxed approach.
Here's a general step-by-step guide I can provide you with:
1. Download and install LSPDFR
2. Download and install the latest version of RagePluginHook
3. Download and install the latest version of ScriptHookV
4. Start the game up and see if it works. If it does, move on to step 5, if it doesn't, ask for help here.
5. Pick some plugins from this list that you like, you can pick however many you like, though I would start with one.
6. Read through the README file carefully, they contain instructions on how to install the plugin 90% of the time.
7. Repeat step 6 with all plugins you would like to use and enjoy.
Another little thing to remember is that when you install plugins you usually get a 'plugins' folder, and that's not a big deal - it's pretty much plug'n'play.
However, some mods include .dll files which are supposed to go in the GTA 5 root folder. If the mod includes a file you already have in your GTA 5 folder - make sure that the file included with the mod is not older than the file you already have installed. If it is older - leave it be, and install the rest of the mod.
It's a really small thing which is easy to overlook that can make the game crash.