More project templates

[LunarWatcher]

Dawn needs more templates.

See the docs for the how. These templates should represent a standard; there's not currently a requirement that the templates have to follow the strictest standards, but standard bad practices should be avoided.

Current languages:

• Vim
• C++ with CMake
• C (with CMake? Not sure what proper C devs use as a standard)
• Go (Just a minimal Go template to get things underway #6)
• Python
• Rust
• Generic GitHub repo
• Something else?

There's a lot of flexibility in what counts as an accepted template, but please check in before implementing anything. Here's a few examples of what counts as invalid templates:

• Generally anything that already has a template generator (such as hugo, libgdx, etc.). At best, though, a template like this could consist of a single command that runs said generator, along with other boilerplate actions, though preferably if it's command line compatible.
• Heavily opinionated templates, or templates with obvious bad practices; templates should follow a standard as much as possible, as well as established best-practices for any given language. (Example: no using namespace std; 🗞️). Indentation is a different can of worms, but could be worth just doing :retab automatically to make it work with the editor's standards. (Not sure if that works from spaces to tabs, but I guess we'll find out if this is attempted)

Note that this isn't a complete list; use common sense when adding templates. To finish off though, a good template:

• Is minimal
• Includes some sane project standards for both your language, as well as some sane standards for Git and GitHub projects (a README, a gitignore, an empty license, etc.)
• Compiles or runs a "Hello, World!" program after being generated. This is purely so any user can instantly verify that the build system has been linked successfully^{1, and is not an invitation to write a "Hello, World!" program in your favorite language (this isn't one of those repos).}
• May include other features that are commented out in the template (Example: Conan in the C++ template). This may change if we support template arguments (Support template arguments #4)

^{1: Dunno about you, but the first thing I do when setting up a project is making sure my build system has been correctly configured. For languages where this doesn't make sense, like Python (because a 0 dependency "Hello, World!" program is trivial to do; takes a file and a command, so there's nothing to test here), this part isn't required}