Supporting Arctic Backend Provider & Orderbook, Tick Data Example (#744)

* change weight_decay & batchsize

* del weight_decay

* big weight_decay

* mid weight_decay

* small layer

* 2 layer

* full layer

* no weight decay

* divide into two data source

* change parse field

* delete some debug

* add Toperator

* new format of arctic

* fix cache bug to arctic read

* fix connection problem

* add some operator

* final version for arcitc

* clear HZ cache

* remove not used function

* add topswrappers

* successfully import data and run first test

* A simpler version to support arctic

* Successfully run all high-freq expressions

* Black format and fix add docs

* Add docs for download and test data

* update scripts and docs

* Add docs

* fix bug

* Refine docs

* fix test bug

* fix CI error

* clean code

Co-authored-by: bxdd <bxddream@gmail.com>
Co-authored-by: wangwenxi.handsome <wangwenxi.handsome@gmail.com>
Co-authored-by: Young <afe.young@gmail.com>

tests/ops/test_elem_operator.py

@@ -19,7 +19,7 @@ class TestElementOperator(TestOperatorData):
             "Abs($change)",
         ]
         columns = ["change", "abs"]
-        self.data = DatasetProvider.expression_calculator(
+        self.data = DatasetProvider.inst_calculator(
             self.inst, self.start_time, self.end_time, freq, expressions, self.spans, C, []
         )
         self.data.columns = columns