Add PR versioning. (#8)

* Add icon, license, and source link to nuget.

* Added PR versioning

Author: adrianhall

tools/GetBuildVersion.psm1

@@ -5,10 +5,16 @@ Function GetBuildVersion {
         [string]$BuildNumber
     )
 
+    # If it is a PR, then grab the PR number and append to the base version.
+    if ($VersionString -match "refs/pull/(?<pr>\d+)/merge") {
+        return "$($BaseVersion)-pr.$($matches['pr'])"
+    }
+
     # Process through regex
     $VersionString -match "(?<major>\d+)(\.(?<minor>\d+))?(\.(?<patch>\d+))?(\-(?<pre>[0-9A-Za-z\-\.]+))?(\+(?<build>\d+))?" | Out-Null
 
-    if ($matches -eq $null) {
+    # If the version string is the main branch, then we just append the build number
+    if ($VersionString -eq "refs/heads/main" -or $matches -eq $null) {
         return "$($BaseVersion)-build.$($BuildNumber)"
     }