programming languages: added rust

wiki/programming_language/rust.md

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+# Rust
+
+[Rust](https://www.rust-lang.org/) is a multiparadigm compiled systems programming language.
+
+## Setup
+
+Rust can be setup as explained on the [Rust website](https://rust-lang.org/tools/install/).
+It is always recommended to install Rust via rustup.
+Alternatively many [Linux](/wiki/linux.md) [package managers](/wiki/linux/package_manager.md)
+package rustup in the `rustup` package.
+
+## Usage
+
+This section addresses the usage of Rust.
+
+### Create a New Project
+
+To create a new project use the command `cargo`.
+The following is an example in which `<project-name>` is a placeholder for the projects name.
+It will create a new directory called the same as the given project name.
+
+```sh
+cargo new <project-name>
+```
+
+If a project parent directory is already present the following command can be used which will turn
+the parent directory in the root directory for a project.
+
+```sh
+cargo init
+```
+
+### Running Programs and Projects
+
+When inside a project the main file can simply be run by using the following command.
+This command can be called from anywhere within the project folder structure.
+
+```sh
+cargo run
+```
+
+If no project was initialized and just a Rust file is present run a command simliar to the
+following, where `<rust-file>` is the name of the Rust file without the `.rs`-extension.
+
+```sh
+rustc <rust-file>.rs
+./<rust-file>
+```
+
+### Managing Packages and Libraries
+
+To use external libraries or packages `cargo` project has to be present since it is used to manage
+them.
+Using the following command a package can be downloaded and added to the dependencies for the 
+project.
+`<package-name>` is a placeholder for the name of the package (for example `z3` for the theorem
+prover).
+
+```sh
+cargo add <package-name>
+```