nu_plugin_plotters should have a way to set axis labels

When plotting data from a time series from the nu_plugin_prometheus plugin:

'rate(unpoller_device_port_transmit_bytes_total{port_id="some-port-id"}[5m])'
| prometheus query range -s home --start ((date now) - 1hr) --end (date now) --step 5min
| get values
| flatten
| rename y x

y	x
75867.61893734452	1728150300
121664.27478666068	1728150600
60296.01729080339	1728150900
96637.246886853	1728151200
113744.3007772066	1728151500
77804.2022084753	1728151800
78611.33469707123	1728152100
114471.74035087718	1728152400
333646.5026033993	1728152700
102914.6110389838	1728153000
80590.20828362502	1728153300
107095.817733316	1728153600
82750.42104672216	1728153900

The x axis values are seconds from the UNIX epoch. Plotting them as the raw value is not very useful for knowing the time span the plot covers.

It would be nice to attach an x (and y) label to a series that plotters-rs could use to give the axis labels as shown in several of the examples, perhaps:

# above command
| upsert x_label {|r|
  ($r.x | into int ) * 1_000_000_000
  | into datetime
  | format date "%+"
}

y	x	x_label
103804.44004673732	1728150697	2024-10-05T17:51:37+00:00
119285.249122807	1728150997	2024-10-05T17:56:37+00:00
55978.62157771563	1728151297	2024-10-05T18:01:37+00:00
75475.46051015754	1728151597	2024-10-05T18:06:37+00:00
78608.26529215892	1728151897	2024-10-05T18:11:37+00:00
98761.50626146942	1728152197	2024-10-05T18:16:37+00:00
148210.41477338516	1728152497	2024-10-05T18:21:37+00:00
299929.763187166	1728152797	2024-10-05T18:26:37+00:00
83996.41052631578	1728153097	2024-10-05T18:31:37+00:00
59713.041159526045	1728153397	2024-10-05T18:36:37+00:00
129653.7883944674	1728153697	2024-10-05T18:41:37+00:00
106094.0097469238	1728153997	2024-10-05T18:46:37+00:00
64033.876479793405	1728154297	2024-10-05T18:51:37+00:00

cptpiepmatz / nu-jupyter-kernel

nu_plugin_plotters should have a way to set axis labels #3