test: Add selene unit test configuration

Author: Quenty

selene.toml

@@ -1 +1 @@
-std = "roblox"
+std = "roblox+testez"

testez.toml

@@ -0,0 +1,69 @@
+# TestEZ
+# https://gist.github.com/Nezuo/65af3108a6214a209ca4e329e22af73c
+
+[[afterAll.args]]
+type = "function"
+
+[[afterEach.args]]
+type = "function"
+
+[[beforeAll.args]]
+type = "function"
+
+[[beforeEach.args]]
+type = "function"
+
+[[describe.args]]
+type = "string"
+
+[[describe.args]]
+type = "function"
+
+[[describeFOCUS.args]]
+type = "string"
+
+[[describeFOCUS.args]]
+type = "function"
+
+[[describeSKIP.args]]
+type = "string"
+
+[[describeSKIP.args]]
+type = "function"
+
+[[expect.args]]
+type = "any"
+
+[[FIXME.args]]
+type = "string"
+required = false
+
+[FOCUS]
+args = []
+
+[[it.args]]
+type = "string"
+
+[[it.args]]
+type = "function"
+
+[[itFIXME.args]]
+type = "string"
+
+[[itFIXME.args]]
+type = "function"
+
+[[itFOCUS.args]]
+type = "string"
+
+[[itFOCUS.args]]
+type = "function"
+
+[[itSKIP.args]]
+type = "string"
+
+[[itSKIP.args]]
+type = "function"
+
+[SKIP]
+args = []