add missing esql api documentation

Author: miguelgrinberg

docs/sphinx/esql.rst

@@ -0,0 +1,79 @@
+ES|QL Query Builder
+===================
+
+.. autoclass:: elasticsearch.esql.ESQL
+   :inherited-members:
+   :members:
+
+.. autoclass:: elasticsearch.esql.esql.ESQLBase
+   :inherited-members:
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.From
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Row
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Show
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Dissect
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Drop
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Enrich
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Eval
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Grok
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Keep
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Limit
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.LookupJoin
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.MvExpand
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Rename
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Sample
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Sort
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Stats
+   :members:
+   :exclude-members: __init__
+
+.. autoclass:: elasticsearch.esql.esql.Where
+   :members:
+   :exclude-members: __init__