[Feature Request] More placeholders

[solonovamax]

Is your feature request related to a problem? Please describe.
N/A

Describe the solution you'd like
Support more placeholders, such as:

• {randomPlayer}, which selects a random online player and inserts their username.
• {tps}. which inserts the current tps, formatted to 2 decimal places.
• {mspt}, which inserts the current mspt, formatted to 2 decimal places.
• {mcVersion}, which inserts the version the minecraft server is running.
• {uptime}, which inserts the current server uptime in the dd'd'hh'h'mm'm' format. (eg. 1d4h12m, which is 1 day, 4 hours, and 12 minutes)
• {memUsed}, which inserts the amount of memory used by the server in gigabytes, formatted to 1 decimal place.
• {memAvail}, which inserts the amount of memory available to the server in gigabytes, formatted to 1 decimal place.

These are the ones I can think of, feel free to add others.

Describe alternatives you've considered
N/A

Additional context
N/A

[agoniaprivat]

Is there any placeholders we can use right now?

[mrfloris]

Is there any placeholders we can use right now?

PlaceholderAPI support would be cool, it would let us use some global / dynamic stuff so we don't have to edit the.conf with each update