Modernize method of saving show_info and app settings

[identd113]

We can use json helper to convert records to json, and vice versa. This would allow us to store all of our data in a flat json file, instead of just a flat unorganized text file. This has mahy subtasks, which I can detail later.

[identd113]

jsonhelper is unable to make a JSON out of show_info. I will contact developer via twitter at @mousedownsoft

[identd113]

JSONHelper can be used after all.
The values must be a string, a boolean, or a number. This is not all we use the script.
If we can "dumb down" some of the values, such as date strings, and paths. This is my test:

`
use AppleScript version "2.4"
use scripting additions
use application "JSON Helper"
set xlist to {}

set x to {show_title:"Happy_Holidays_America", show_time:16, show_length:60, show_air_date:Sunday, show_transcode:"missingvalue", show_temp_dir:"alias Backups:", show_dir:"alias Backups:", show_channel:5.1, show_active:true, show_id:"221fbe1126389e6af35f405aa681cf19", show_recording:false, show_last:"date Sunday, December 13, 2020 at 4:04:54 PM", show_next:"date Sunday, December 13, 2020 at 4:00:00 PM", show_end:"date Sunday, December 13, 2020 at 5:00:00 PM", notify_upnext_time:missing value, notify_recording_time:missing value, hdhr_record:"XX105404BE", show_is_series:false}
set end of xlist to x
set end of xlist to x
log (make JSON from xlist)
`

[identd113]

The schema for the save file deserves a good thinking out.
Ideally, we would have some separation between the tuner devices, and the shows they are recording. Since that would require a decent amount of work, and frankly, since this is just me yelling into the forest, I do not see much point of that kind of time commitment.
ideal hierarchy as is:

data{shows:show_info, hdhr_devices:HDHR_DEVICE_LIST, settings:misc_settings}

[identd113]

`use AppleScript version "2.4"
use scripting additions
use application "JSON Helper"

set x to make JSON from {atest:"123", atest2:123, atest3:((current date) as text), atest4:true, atest5:POSIX path of (path to me), atest6:missing value}

set y to read JSON from x

log ((date (atest3 of y)) - (current date))
`

[identd113]

jsonhelper fails to convert HFS paths, and dates into proper applescript, and then fails with a blank response.
If these items can be stored as text, then I suppose we could build us a new saving system.