Improved Export-FunctionSource + some Docker fixes

Export-FunctionSource to handle Filters and scripts + following Aliases.
Edit-DockerCompose will allow editing of additional files next to the
default docker-compose files.
dcc, dcdown and dcup to work with ProjectPath parameter.
Added ssh.conf to the config.files.json dictionary.

dcdown.ps1

@@ -1 +1,9 @@
-docker-compose down --timeout=3 --volumes --remove-orphans "$args"
+[CmdletBinding(SupportsShouldProcess)]param(
+    [string[]]$ProjectPath=@($PWD),
+    [Parameter(Position = 0, ValueFromRemainingArguments = $true)]
+    [string[]]$CliParams
+)
+
+$ProjectPath | ForEach-Object {
+    docker-compose --file $(Resolve-Path $(Join-Path $_ docker-compose.yml)) down --timeout=3 --volumes --remove-orphans "$CliParams"
+}