[Feature request] Manipulate data through GUI

__Proposal:__
Ability to manipulate data (DELETE, INSERT etc.) using GUI

__Current behavior:__
Currently it is only possible using ```influx``` command.
What is more, I personally think CMD interface in Influxdb 1.x was much more intuitive than in Influxdb 2.0.
In 1.x it was possible to enter the shell using ```influx``` and then type all commands there. In 2.0 I am only aware of using commands like ```influx write...``` etc. I also think there is no possibility to select data using 2.0 command line.

__Desired behavior:__
It would be perfect to be able to SELECT, INSERT, DELETE data using GUI.

Start by reviewing the existing GUI and the InfluxDB 2.0 `influx` command behavior described in the issue. Clarify the supported SELECT, INSERT, and DELETE workflows and where they should appear in the GUI; done means those operations can be performed there with clearly defined behavior.

Written by the indexing model from the issue text.