fix: Installer improvements and bug fixes

[XavierChanth]

- What I did

• Made the tar unpacking less verbose so the installer is cleaner
• added logrotation to the non-tmux installation option which closes Introduce better logging for cron sshnpd mechanism #175
• merged updater into installer
  • Checks if the service type is cron, and adds a logrotate line to crontab if it is
  • Checks to see if there was an existing cron entry for this service before trying to start sshnpd (i.e. only start if it is truly the first install)
    closes FileSystemException inside ~/.sshnp #203
• Exits if the tar/zip file is missing
• Escapes "." in ARCH so that the armv7l architecture only matches arm, not arm64

- How I did it

- How to verify it

- Description for the changelog
fix: Installer improvements and bug fixes

[XavierChanth]

@JeremyTubongbanua I've removed the mandatory tag

[JeremyTubongbanua]

"options" might be confusing for some people maybe, I've seen them called flags

[XavierChanth]

From what I've seen it called in the industry:
flags = no value after (--help, -u) are flags
options = value after (-c @‎ client, -d @‎ device, -n devicename) are options

essentially a flag is a boolean option

[gkc]

you could also consider using single quotes

[gkc]

but if you're later using this in a double-quotes expression, probably best to leave as double quotes :-)

[XavierChanth]

This is a bug fix that @cconstab found, I want to match a "." at the end of the string using grep, but grep accepts regex. So I need the "\" in the string to escape the ".".

echo $ARCH outputs "arm64\." in this case.

The one causing issues was "arm." which was matching both "arm64." and "arm."

[XavierChanth]

e.g.

~/temp 
➜ ls
arm.tgz   arm64.tgz

# with the \

~/temp 
➜ test_ARCH="arm\."   

~/temp 
➜ ls | grep $test_ARCH
arm.tgz

~/temp 
➜ echo $test_ARCH
arm\.

# without the \

~/temp 
➜ test_ARCH="arm." 

~/temp 
➜ ls | grep $test_ARCH
arm.tgz
arm64.tgz

~/temp 
➜ echo $test_ARCH
arm.

[XavierChanth]

you could also consider using single quotes

See line 173

[cconstab]

tested on armvl pi works fine