Added Jenkinsfile and updated package naming.

test-server/end_process.ps1

@@ -1,8 +1,9 @@
-if (Test-Path ./pid.temp) {
-	$sID = Get-Item -Path ./pid.temp | Get-Content -Tail 1
+if (Test-Path ./test-server.pid) {
+	$sID = Get-Item -Path ./test-server.pid | Get-Content -Tail 1
 	if (Get-Process -Id $sID -ErrorAction SilentlyContinue) {
 		Stop-Process -Id $sID
 	}
-	Remove-Item "./pid.temp"
-}
-
+	Remove-Item "./test-server.pid"
+} else {
+	Write-Output "Couldn't find running server to stop."
+}

test-server/load_build.ps1

@@ -1,2 +1,3 @@
+New-Item -Path .\plugins -ItemType Directory -Force
 write-Output "Attempting to copy plugin jar to plugins folder..."
 copy-Item -Path "..\target\IslandSurvivalCraft*.jar" -Destination "plugins\IslandSurvivalCraft.jar"

test-server/start_process.ps1

@@ -1,6 +1,10 @@
+if (!(Test-Path -Path "paper.jar" -PathType Leaf)) {
+    Invoke-WebRequest -Uri "https://api.papermc.io/v2/projects/paper/versions/1.16.5/builds/794/downloads/paper-1.16.5-794.jar" -OutFile "paper.jar"
+}
+
 write-Output "Attempting to start Paper test server."
 $SID = Start-Process java -ArgumentList "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=25566", "-Xms512M", "-Xmx1G", "-jar", "paper.jar", "nogui" -PassThru
 $SID = $SID.Id
 write-Output "Process started. PID is: $SID"
 
-$SID | Out-File -FilePath "pid.temp"
+$SID | Out-File -FilePath "test-server.pid"