chore: Basic gitignore, initial README

Author: F0bes

.gitignore

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+*.o

README.md

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+# PCSX2/HardwareTests
+This is a collection of hardware tests that were used to validate the accuracy of PCSX2 
+
+Each directory will contain a test and readme.
+
+## What you need to know
+These tests are built using the latest PS2 homebrew toolchain available [here](https://github.com/ps2dev/ps2toolchain).
+
+These tests are written under the assumption that you are using [ps2client](https://github.com/ps2dev/ps2client) and [ps2link](https://github.com/ps2dev/ps2link/) with your real hardware.
+The results for the majority of tests will be sent back to your host computer either by using the network `STDIO` (for messages), or using `host:` (for file i/o).
+
+As of now there is no automated runner for these tests.