add ocean constants for future use cases, can be ignored rn

Author: liellnima

climateset/download/constants/omip.py

@@ -0,0 +1,22 @@
+class OmipConstants:
+    """
+    Attributes:
+        NODE_LINK (str): Where the data can be accessed
+        MODEL_SOURCES (List<str>): Identifiers for supported climate models
+        VAR_SOURCE_LOOKUP (Dict<str, List<str>>): model and raw variables
+        SUPPORTED_EXPERIMENTS (list<str>): experiments of climate models (runs) that are supported
+    """
+
+    NODE_LINK = "http://esgf-data2.llnl.gov"
+
+    MODEL_SOURCES = [
+        "NorESM2-LM",
+    ]
+
+    VAR_SOURCE_LOOKUP = [
+        "omldamax",
+    ]
+
+    SUPPORTED_EXPERIMENTS = [
+        "omip1",
+    ]