Make an InfluxDB Line Protocol compatible demo

[tisonkun]

Ingestion with InfluxDB Line Protocol, Analysis with SQL and PromQL.

[tisonkun]

It seems we cannot leverage InfluxDB's CLI cause -

• https://github.com/influxdata/influx-cli/issues/452

... while our endpoint is something like: https://xxx.us-west-2.aws.greptime.cloud/v1/influxdb/api/v2/write. Note the /v1/influxdb/ basepath.

[tisonkun]

And also this -

• https://github.com/GreptimeTeam/greptimedb/issues/3487

InfluxDB CLI always use GZIP compression but GreptimeDB is yet to support that.

[tisonkun]

Other related issues when developing this demo:

• https://github.com/GreptimeTeam/greptimedb/issues/3413
• https://github.com/GreptimeTeam/greptimedb/issues/3436