Add earthquake dataset

Add earthquake dataset processed by Stockman et al. (2024) and further processed into TPP compatible format

earthquake/test.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:00d00c61fc7ef6d2f2177facfc53e2b750669e1452010a7dd3dbf3209f5edb0d
+size 239134

earthquake/train.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:f83e6be2fc1c4e7992936bf88dc20b2c033928a964a5bb943d0ad4deeddd96fc
+size 2085148

earthquake/validation.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:6850dc49d98f4893652927def0c707d69418a827359e50563f16bae93c1eb1a3
+size 291283