Add eval config

eval.yaml

@@ -0,0 +1,12 @@
+name: BrazilianToxicTweetsClassification
+description: 'ToLD-Br is the biggest dataset for toxic tweets in Brazilian Portuguese,
+  crowdsourced by 42 annotators selected from a pool of 129 volunteers. Annotators
+  were selected aiming to create a plural group in terms of demographics (ethnicity,
+  sexual orientation, age, gender). Each tweet was labeled by three annotators in
+  6 possible categories: LGBTQ+phobia, Xenophobia, Obscene, Insult, Misogyny and Racism.'
+evaluation_framework: mteb
+tasks:
+- id: BrazilianToxicTweetsClassification
+- id: BrazilianToxicTweetsClassification_default_test
+  config: default
+  split: test