Introducing xpns_log()
This will replace following functions

• xpns_msg()
• xpns_msg_info()
• xpns_msg_warning()
• xpns_msg_error()
• xpns_msg_debug()

This will consolidate our code and make it easier as its all in one function.

Features
loglevels is now called via an positional argument, eg:
xpns_log "error" "${_dir} is not writable."

we now have following values we can call:

• info
• warning
• error
• debug

New look to the logoutput
It now comes with a new updated output to improve readability

old vs new
xpanes:Info: This is an info message
xpanes:Debug: [2023-04-18_15:24:33]:main:debug example

[xpanes:info] This is an info message
[xpanes:debug:2023-04-18_15:24:33:main] debug example

Ability to parse multiple inputs

old function had the limitations to only parse the first positional argument it acquired. With xpns_log we can make how many arguments we wish.

For example:

old and new
xpns_msg_info "this is an info message" "and here is more information"
xpns_log "info" "This is an info message" "and here is more information"

this provides following input:

old
xpanes:Info: this is an info message
new
[xpanes:info] This is an info message and here is more information

I have tested the function on all the input in xpanes, but should we ever get an issue with parsing the loglevel, we have a following output:
[xpanes:internal error] invalid log type, if you get this error. Please file an issue on github: https://github.com/greymd/tmux-xpanes/issues

Referring to setup an issue on the project if it ever occurs.
I have also made unit testing for the function to make sure we catch any issues.

Cheers