[DanGough#111] Add support for HL7 Spy

Adds a plugin Get-InnerHarbourHL7Spy.ps1 and a new private function
Parse-SemVer for interrogating SemVers.

https://hl7spy.ca/blog/

Nevergreen/Apps/Get-InnerHarbourHL7Spy.ps1

@@ -0,0 +1,58 @@
+$AppName = "HL7Spy"
+
+$Arch = "x64" # Apparently the only supported one.
+$ReleaseUrl = "https://hl7spy.ca/blog/"
+$ReleaseNotesUrl = "https://hl7spy.ca/release-history/" # N.B. This does not always appear to be kept upto date.
+$InstallInstructionsUrl = "https://conevity.atlassian.net/wiki/spaces/HL7Spy4/pages/626065447/Download+Installation"
+
+Write-Verbose "Obtaining $($AppName) Release Versions from $($ReleaseUrl)...`n"
+
+$AppVersions = @(
+    @{AppName = "$($AppName)"; Type = 'exe'; URLPattern = 'HL7Spy\.(\d+\.\d+(\.\d+))'}
+)
+
+foreach ($AppVersion in $AppVersions) {
+
+    # Get all matching URLs
+    $URLs = Get-Link -Uri $ReleaseUrl -MatchProperty href -Pattern $AppVersion.URLPattern |
+            Set-UriPrefix -Prefix 'https://hl7spy.ca/'
+
+    if (-not $URLs) {
+        Write-Warning "Could not find release for $($AppVersion.AppName) $($AppVersion.Type)"
+        continue
+    }
+
+    # Get versions from URLs
+    $VersionUrlPairs = @()
+    foreach ($Url in $URLs) {
+        $VerString = Get-Version -String $Url
+
+        try {
+            $VersionObj = [version]$VerString
+            $VersionUrlPairs += [PSCustomObject]@{
+                Version = $VersionObj
+                Url     = $Url
+            }
+        } catch {
+            Write-Warning "Invalid version format '$VerString' for URL '$Url'"
+        }
+    }
+
+    if (-not $VersionUrlPairs) {
+        Write-Warning "Could not extract valid versions for $($AppVersion.AppName) $($AppVersion.Type)"
+        continue
+    }
+
+    # Sort versions descending using [version] comparison
+    $HighestVersionPair = $VersionUrlPairs | Sort-Object -Property Version -Descending | Select-Object -First 1
+
+    New-NevergreenApp -Name $($AppVersion.AppName) `
+                      -Architecture $Arch `
+                      -Version $($HighestVersionPair.Version) `
+                      -Uri $($HighestVersionPair.Url) `
+                      -Type $($AppVersion.Type)
+}
+
+Write-Verbose ""
+Write-Verbose "$($AppName) Install instructions are available here: $($InstallInstructionsUrl)"
+Write-Verbose "$($AppName) (Version: $($Version)) Release notes are available here: $($ReleaseNotesUrl)"