Single relocation declaration

- Add gradle/runtime-relocations.gradle as the one runtime-download relocation map
- Read the slimJar relocations and shrinkRelocations from that map
- Pass the derived relocation prefixes into BukkitArtifactVerifier
- Drop the duplicate jar size check the packaging audit already enforces

gradle/runtime-relocations.gradle

@@ -0,0 +1,19 @@
+ext.runtimeDownloadRelocations = [
+    'com.dfsek.paralithic'                  : 'art.arcane.iris.util.paralithic',
+    'com.google.gson'                       : 'art.arcane.iris.util.gson',
+    'com.googlecode.concurrentlinkedhashmap': 'art.arcane.iris.util.lru',
+    'io.papermc.lib'                        : 'art.arcane.iris.util.paper',
+    'net.kyori'                             : 'art.arcane.iris.util.kyori',
+    'org.bstats'                            : 'art.arcane.iris.util.metrics',
+    'org.apache.maven'                      : 'art.arcane.iris.util.maven',
+    'org.codehaus.plexus'                   : 'art.arcane.iris.util.plexus',
+    'org.eclipse.sisu'                      : 'art.arcane.iris.util.sisu',
+    'org.eclipse.aether'                    : 'art.arcane.iris.util.aether',
+    'com.google.inject'                     : 'art.arcane.iris.util.guice',
+    'org.dom4j'                             : 'art.arcane.iris.util.dom4j',
+    'org.jaxen'                             : 'art.arcane.iris.util.jaxen',
+    'com.github.benmanes.caffeine'          : 'art.arcane.iris.util.caffeine'
+] as LinkedHashMap<String, String>
+
+ext.runtimeDownloadedPrefixes = ext.runtimeDownloadRelocations.values()
+    .collect { String target -> target.replace('.', '/') + '/' } as List<String>