feat: interval& None value for prev&`next (#252)

* test: for builtin functions

* test: expect fail for `datetime()`

* feat: add `interval()` fn(WIP)

* feat: `interval()` fn in builtin(UNTEST)

* refactor: move `py_vec_obj_to_array` to util.rs

* style: fmt

* test: simple `interval()` cases

* test: `interval()` with `last()`&`first()`

* doc: `ts` param of `interval()`

* log: common_telemetry for logging in script crate

* doc: corrsponding test fn for each .ron file

* feat: change to`mpsc` for schedule_job

* test: schedule_job

* dep: rm rustpython dep in common-function

* refactor: mv `schedule_job` into `Script` trait

* test: change to use `interval` to sample datapoint

* feat: add gen_none_array for generate None Array

* feat: impl Missing value for `prev`&`next`

* test: `sum(prev(values))`

* doc: add comment for why not support Float16 in `prev()`

* feat: add `interval` in py side mock module

* style: cargo fmt

* refactor: according to comments

* refactor: extract `apply_interval_function`

* style: cargo fmt

* refactor: remove `schedule()`

* style: cargo fmt

component/script/python/test.py

@@ -26,6 +26,16 @@ def get_db(req:str):
     return requests.get("http://{}{}".format(get_conn_addr(), req))
 
 if __name__ == "__main__":
+    with open("component/script/python/example/kline.json", "r") as kline_file:
+        kline = json.load(kline_file)
+        table = as_table(kline["result"])
+        close = table["close"]
+        open_time = table["open_time"]
+        env = {"close":close, "open_time": open_time}
+
+        res = mock_tester(calc_rvs, env=env)
+        print("Mock result:", [i[0] for i in res])
+        exit()
     if len(sys.argv)!=2:
         raise Exception("Expect only one address as cmd's args")
     set_conn_addr(sys.argv[1])
@@ -42,11 +52,6 @@ if __name__ == "__main__":
         open_time = table["open_time"]
         init_table(close, open_time)
 
-        # print(repr(close), repr(open_time))
-        # print("calc_rv:", calc_rv(close, open_time, open_time[-1]+datetime("10m"), datetime("7d")))
-        env = {"close":close, "open_time": open_time}
-        # print("env:", env)
-        print("Mock result:", mock_tester(calc_rvs, env=env))
         real = calc_rvs()
         print(real)
         try: