add typing hints for telemetry-python

[kalradivyanshu]

This pull request adds typing hints to telemetry-python. Same PR for JS client: telemetry-sh/telemetry#1

from typing import Mapping, TypedDict, Literal, TypeVar, Generic
TelemetryQueryType = TypeVar("TelemetryQueryType", bound=Mapping)

class TelemetryQueryResponse(TypedDict, Generic[TelemetryQueryType]):
    data: list[TelemetryQueryType]
    status: Literal["success"]
    key_order: list[str]

class TelemetryLogResponse(TypedDict):
    status: Literal["success"]
    message: str

So now you can use TypeDict and get typing hints for queries:

from telemetry_sh.telemetry_types import TelemetryQueryResponse

class UberData(TypedDict):
    city: str
    price: float

response: TelemetryQueryResponse[UberData] = await telemetry.query("SELECT city, price from uber_rides");
uber_data = response["data"]
uber_data # is of type UberData.