[pgpool-general: 9286] differentiating settings that support units

[zam bak]

According to https://www.pgpool.net/docs/45/en/html/config-setting.html,
there is a distinction between "numeric" settings ("integers",
"floats"), and "numeric with unit" settings.

For each setting then there is an indicator (in parentheses) of what
type it accepts...

But some settings indicate "integer" even though they accept "numeric
with units".
For example:
* delay_threshold_by_time (integer)
* sr_check_period (integer)
Side note - documentation details are clear that these are intervals
in seconds (which gives a hint that you can use units)

But some settings, such as:
* health_check_timeout (integer)
* health_check_period (integer)
also specify it is an "interval" but they do *not* support units.
Specifying units, will result in errors during startup (tested on 4.5.5):
2024-12-08 10:38:19.039 [34300]: [1-1] user=[No Connection],db=[No
Connection],app=main FATAL:  invalid value for parameter
"health_check_period": "10s"
2024-12-08 10:39:03.872 [34328]: [1-1] user=[No Connection],db=[No
Connection],app=main FATAL:  invalid value for parameter
"health_check_timeout": "30s"


Questions:
* should "health_check_*" related settings support interval units?
* should docs differentiate settings that support "units" and show
some other indicator next to the setting instead of just "(integer)" -
for example "(integer,units)", "(float,units)"?