Minor fault in influx v1 shell: Incompleteness in the help-as-you-type function

[elofu17]

Summary:
The helping function that show you suggestions as you type lack vital suggestions for SHOW TAG.

Info + how to reproduce:
I run the latest version of influx CLI on a Debian 11 machine (package: influxdb2-cli 2.7.3-1).

# influx version
Influx CLI dev (git: none) build_date: 2023-04-28T14:24:14Z

I run the v1 shell and connect to my InfluxDB v2 (also latest version, on the same Debian 11 machine).

# influx v1 shell
InfluxQL Shell dev
Connected to InfluxDB OSS v2.7.5
> use Main
> precision rfc3339

Now I type SHOW TAG at the prompt.
I'm presented with just one possible suggestion: VALUES.
It should also show suggestions for KEY and KEYS.

Also:
If you type SHOW TAG VALUES it should help you with the next word(s) WITH KEY.