Introduces a contributor's guide

I took notes for every step I took to make my
[first contribution](artificialwisdomai/sdac#8) to XertAI.
Then, I used those notes to create this contributor's guide, after referencing
other CONTRIBUTING.md files. :)

Resolves artificialwisdomai/sdac#7

CONTRIBUTING.md

@@ -0,0 +1,99 @@
+# Contributing to xertai
+
+So, you want to build the next generation of machine learning tools within XertAI? Yay! 
+
+Everybody is treated equally and must follow this process in order to contribute to the project blablabla
+
+- [Code of Conduct](#code-of-conduct)
+- [Contributor License Agreements](#contributor-license-agreements)
+- [Setting up your Environment to Contribute to XertAI] (#Setting-up-your-Environment-to-Contribute-to-XertAI)
+- [Making a Pull Request (PR) Contribution to XertAI] (#Making-a-Pull-Request-(PR)-Contribution-to-XertAI)
+
+# Code of conduct
+
+All members of the XertAI community must abide by the [Code of Conduct](CODE-OF-CONDUCT.md).
+
+# Contributor license agreements
+
+We'd love to accept your contributions! But before we can merge your pull request, you will have to approve the [Computelify CLA](CLA.md).
+
+Once you submit a pull request, you will be prompted to approve the CLA. This is necessary because you own the copyright to your changes, even
+after your contribution becomes part of this project. So this agreement simply gives Computelify permission to use and redistribute your
+contributions as part of the project.
+
+# Setting up your Environment to Contribute to XertAI
+
+## If you do not have an SSH public key, create one:
+
+```bash
+lsdake@beast-05:~$ ssh-keygen -key ed25519
+	(...)
+```
+
+## Register ssh key to github land
+todo
+
+## Create a folder to contain repositories
+
+```bash
+lsdake@beast-05:~$ mkdir repos
+lsdake@beast-05:~$ cd repos
+```
+
+## Clones the repository from your github profile, making a local copy on the machine
+
+```bash
+lsdake@beast-05:~$ git clone [email protected]:lsdake/SDAC.git
+	(...)
+```
+
+## Creates a reference to the source of truth
+```bash
+lsdake@beast-05:~/repos/SDAC$ git remote add upstream https://github.com/xertai/SDAC.git
+```
+
+# Making a Pull Request (PR) Contribution to XertAI
+
+This is how you submit improvements to the code that you've made, after executing ^^^ all that
+Some of these commands are "git magic": just roll with it :). They should be done each time you make a contribution!
+
+## Create a branch to make our improvements
+
+```bash
+lsdake@beast-05:~/repos/SDAC$ git checkout -b [BRANCHNAME]
+```
+
+## Make your improvements to the thingy wingy
+
+Make your changes to any file you want to modify
+
+```bash
+lsdake@beast-05:~/repos/SDAC$ git commit .
+```
+
+## Retrieves a copy of the references to the source of truth
+
+This updates our local references to the upstream
+
+```bash
+lsdake@beast-05:~/repos/SDAC$ git fetch upstream
+	(...)
+```
+
+## Updates the local copy of the repository with the retrieved copy of the references from the source of truth
+
+```bash
+lsdake@beast-05:~/repos/SDAC$ git rebase upstream/main
+	Successfully rebased and updated refs/heads/main.
+```
+
+## This pushes our local copy that's synced with the SoT to our personal fork of the SoT
+
+(Warning triangle emoji) With XertAI's workflow, we protect the main branch of the repository so this is always a safe operation from the project's perspective. It may end up damaging your local copy on github, so be careful!
+
+```bash
+lsdake@beast-05:~/repos/SDAC$ git push -f
+	Total 0 (delta 0), reused 0 (delta 0), pack-reused 0
+	To github.com:lsdake/SDAC.git
+		eae357c..adade0e  main -> main
+```