[Simplify] librewolf.json: Consider adopting the addition folder approach for custom configs files

[anxshi]

Is there a reason why librewolf.json is one of the only firefox-based browser manifest that didn't adopt the Addition dir approach?

Extras/bucket/librewolf.json

Lines 13 to 44 in 3c22c27

	"pre_install": [
	"'LibreWolf-WinUpdater.exe', 'ScheduledTask-Create.ps1', 'ScheduledTask-Remove.ps1' | ForEach-Object { \"$dir/$_\" } | Remove-Item",
	"",
	"# Customizing LibreWolf Using AutoConfig",
	"# https://support.mozilla.org/en-US/kb/customizing-firefox-using-autoconfig",
	"$null = ensure \"$persist_dir/LibreWolf/defaults/pref\"",
	"Copy-Item \"$persist_dir/LibreWolf/defaults/pref/*\" \"$dir/LibreWolf/defaults/pref\" -Exclude channel-prefs.js",
	"Copy-Item \"$persist_dir/LibreWolf/*.js\", \"$persist_dir/LibreWolf/*.cfg\" \"$dir/LibreWolf\"",
	"",
	"# Customizing LibreWolf Using policies.json",
	"# https://support.mozilla.org/en-US/kb/customizing-firefox-using-policiesjson",
	"# Used to override the default policies.json of LibreWolf, if you want",
	"$null = ensure \"$persist_dir/LibreWolf/distribution\"",
	"Copy-Item \"$persist_dir/LibreWolf/distribution/policies.json\" \"$dir/LibreWolf/distribution\" -ErrorAction SilentlyContinue"
	],
	"bin": [
	[
	"LibreWolf-Portable.exe",
	"librewolf"
	]
	],
	"shortcuts": [
	[
	"LibreWolf-Portable.exe",
	"LibreWolf"
	]
	],
	"persist": "Profiles",
	"pre_uninstall": [
	"Copy-Item \"$dir/LibreWolf/defaults/pref/*\" \"$persist_dir/LibreWolf/defaults/pref\" -Exclude channel-prefs.js",
	"Copy-Item \"$dir/LibreWolf/*.js\", \"$dir/LibreWolf/*.cfg\" \"$persist_dir/LibreWolf\" -Exclude librewolf.cfg"
	],

Most of firefox-based scoop browsers use this:

Extras/bucket/firefox.json

Lines 27 to 50 in bf63d5d

	"post_install": [
	"firefox -CreateProfile \"Scoop $persist_dir\\profile\"",
	"$Addition = \"$persist_dir\\addition\"",
	"if (Test-Path $Addition) {",
	" info 'Copying additional items...'",
	" Copy-Item -Path $Addition\\* -Destination $dir -Force -Recurse -ErrorAction SilentlyContinue",
	"}"
	],
	"bin": "firefox.exe",
	"shortcuts": [
	[
	"firefox.exe",
	"Firefox"
	],
	[
	"firefox.exe",
	"Firefox Profile Manager",
	"-P"
	]
	],
	"persist": [
	"distribution",
	"profile"
	],

I came up with a mock up, and it should work out of the box:

    "pre_install": "'LibreWolf-WinUpdater.exe', 'ScheduledTask-Create.ps1', 'ScheduledTask-Remove.ps1' | ForEach-Object { \"$dir/$_\" } | Remove-Item",
    "post_install": [
        "$Addition = \"$persist_dir\\addition\"",
        "if (Test-Path $Addition) {",
        "  info 'Copying additional items...'",
        "  Copy-Item -Path $Addition\\* -Destination \"$dir\\LibreWolf\" -Force -Recurse -ErrorAction SilentlyContinue",
        "}"
    ],
    "bin": [
        [
            "LibreWolf-Portable.exe",
            "librewolf"
        ]
    ],
    "shortcuts": [
        [
            "LibreWolf-Portable.exe",
            "LibreWolf"
        ]
    ],
    "persist": [
        "LibreWolf\\distribution",
        "Profiles"
    ],