Create versions.xml

Preparing new version check file. Dropping support for versions older than 1.20

versioncheck/1.20/versions.xml

@@ -0,0 +1,17 @@
+<versions>
+  <release>
+    <version>1.15_1.0.33</version>
+    <notes>D1	Fixed an issue with GiveMH that caused an exception.
+D2	Fixed an issue with charged creepers, and added 1.20.2 support.
+D3	Fixed an issue with commands and console not having permissions.</notes>
+    <link>https://www.spigotmc.org/resources/moremobheads.73997/history</link>
+  </release>
+  <developer>
+    <version>1.20_1.0.34.D5</version>
+    <notes>D1	Fixed missing vex.angry head in giveMH command.
+D2	Changed to PlayerProfile created heads via bukkit API.
+D3	Fixed GiveMH and GivePH commands.
+D4	Fixed CustomTrader heads losing sound 1.20-1.20.2 less than Build 3936.</notes>
+    <link>https://discord.com/channels/654087250665144321/662940711167066123</link>
+  </developer>
+</versions>