Add project readme and license

LICENSE

+MIT License
+
+Copyright (c) 2022 Jason Heard
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

+# Advent of Code 2022
+
+Solutions to the [Advent of Code 2022](http://adventofcode.com/2022) using Rust.
+
+## Dependencies
+
+This project uses Rust and so it should work on [any supported
+platform](https://doc.rust-lang.org/rustc/platform-support.html).
+
+Required tools:
+
+-  `cargo` is the package management and build tool for Rust. Instructions for
+   installing it along with all required Rust componentss are
+   [here](https://www.rust-lang.org/tools/install). The quick version is to get
+   [rustup](https://rustup.rs/) and run it.
+
+## Running
+
+To run the project:
+
+1. Install `cargo` and Rust.
+1. Download the code.
+1. Execute `cargo run -p dayNN` where `NN` is the day you want to run.
+   -  You can see the simple results (the usually included inline example) via
+      `cargo run -p dayNN -- --simple`
+   -  Tests of the simple cases (and sometimes others) can be run with `cargo test`.
+
+## Other Years' Solutions
+
+Here are the links to my solutions for all of the years I have participated:
+
+-  [2017](https://github.com/101100/AdventOfCode2017)
+-  [2018](https://github.com/101100/AdventOfCode2018)
+-  [2019](https://gitlab.101100.ca/101100/adventofcode2019)
+-  [2020](https://gitlab.101100.ca/101100/adventofcode2020)
+-  [2021](https://gitlab.101100.ca/101100/adventofcode2021)
+-  [2022](https://gitlab.101100.ca/101100/adventofcode2022)