create dataset (#2074)

### What problem does this PR solve?

You can use sdk to create a dataset

### Type of change

- [x] New Feature

---------

Co-authored-by: root <root@xwg>

sdk/python/ragflow/modules/base.py

@@ -0,0 +1,30 @@
+class Base(object):
+    def __init__(self, rag, res_dict):
+        self.rag = rag
+        for k, v in res_dict.items():
+            if isinstance(v, dict):
+                self.__dict__[k] = Base(rag, v)
+            else:
+                self.__dict__[k] = v
+
+    def to_json(self):
+        pr = {}
+        for name in dir(self):
+            value = getattr(self, name)
+            if not name.startswith('__') and not callable(value) and name != "rag":
+                if isinstance(value, Base):
+                    pr[name] = value.to_json()
+                else:
+                    pr[name] = value
+        return pr
+
+
+    def post(self, path, param):
+        res = self.rag.post(path,param)
+        return res
+
+    def get(self, path, params=''):
+        res = self.rag.get(path,params)
+        return res
+
+

sdk/python/ragflow/modules/dataset.py

@@ -0,0 +1,33 @@
+from .base import Base
+
+
+class DataSet(Base):
+    class ParseConfig(Base):
+        def __init__(self, rag, res_dict):
+            self.chunk_token_count = 128
+            self.layout_recognize = True
+            self.delimiter = '\n!?。；！？'
+            self.task_page_size = 12
+            super().__init__(rag, res_dict)
+
+    def __init__(self, rag, res_dict):
+        self.id = ""
+        self.name = ""
+        self.avatar = ""
+        self.tenant_id = None
+        self.description = ""
+        self.language = "English"
+        self.embedding_model = ""
+        self.permission = "me"
+        self.document_count = 0
+        self.chunk_count = 0
+        self.parse_method = 0
+        self.parser_config = None
+        super().__init__(rag, res_dict)
+
+    def delete(self):
+        try:
+            self.post("/rm", {"kb_id": self.id})
+            return True
+        except Exception:
+            return False