Rename Js5Library{Reader,Writer} to PackClassLibrary{Reader,Writer}

JS5 seems to refer to many things, so I'm intending to name Jagex's
custom class file format "packclass" instead of "js5". My reasoning is
that the tool for unpacking it is called unpackclass. If you use the
same logic behind naming the Pack200 packer unpack200, then "packclass"
is a reasonable name for Jagex's class file format.

Signed-off-by: Graham <gpe@openrs2.dev>

asm/src/main/java/dev/openrs2/asm/io/PackClassLibraryReader.kt

@@ -3,7 +3,7 @@ package dev.openrs2.asm.io
 import dev.openrs2.asm.classpath.Library
 import java.io.InputStream
 
-object Js5LibraryReader : LibraryReader {
+object PackClassLibraryReader : LibraryReader {
     override fun read(input: InputStream): Library {
         // TODO(gpe): implement
         return Library()

asm/src/main/java/dev/openrs2/asm/io/PackClassLibraryWriter.kt

@@ -4,7 +4,7 @@ import dev.openrs2.asm.classpath.ClassPath
 import dev.openrs2.asm.classpath.Library
 import java.io.OutputStream
 
-object Js5LibraryWriter : LibraryWriter {
+object PackClassLibraryWriter : LibraryWriter {
     override fun write(output: OutputStream, classPath: ClassPath, library: Library) {
         // TODO(gpe): implement
     }

bundler/src/main/java/dev/openrs2/bundler/Bundler.kt

@@ -5,10 +5,10 @@ import dev.openrs2.asm.classpath.ClassPath
 import dev.openrs2.asm.classpath.Library
 import dev.openrs2.asm.io.JarLibraryReader
 import dev.openrs2.asm.io.JarLibraryWriter
-import dev.openrs2.asm.io.Js5LibraryWriter
 import dev.openrs2.asm.io.ManifestJarLibraryWriter
 import dev.openrs2.asm.io.Pack200LibraryReader
 import dev.openrs2.asm.io.Pack200LibraryWriter
+import dev.openrs2.asm.io.PackClassLibraryWriter
 import dev.openrs2.asm.io.SignedJarLibraryWriter
 import dev.openrs2.asm.transform.Transformer
 import dev.openrs2.bundler.transform.ResourceTransformer
@@ -85,19 +85,19 @@ class Bundler @Inject constructor(
             "runescape.pack200", "main_file_cache.dat0", classPath, client, Pack200LibraryWriter
         )
         val clientJs5 = Resource.compressLibrary(
-            "runescape.js5", "main_file_cache.dat1", classPath, client, Js5LibraryWriter
+            "runescape.js5", "main_file_cache.dat1", classPath, client, PackClassLibraryWriter
         )
         val glClientPack = Resource.compressLibrary(
             "runescape_gl.pack200", "main_file_cache.dat3", glClassPath, glClient, Pack200LibraryWriter
         )
         val glClientJs5 = Resource.compressLibrary(
-            "runescape_gl.js5", "main_file_cache.dat4", glClassPath, glClient, Js5LibraryWriter
+            "runescape_gl.js5", "main_file_cache.dat4", glClassPath, glClient, PackClassLibraryWriter
         )
         val glPack = Resource.compressLibrary(
             "jaggl.pack200", "main_file_cache.dat5", glClassPath, gl, Pack200LibraryWriter
         )
         val glJs5 = Resource.compressLibrary(
-            "jaggl.js5", "main_file_cache.dat6", glClassPath, gl, Js5LibraryWriter
+            "jaggl.js5", "main_file_cache.dat6", glClassPath, gl, PackClassLibraryWriter
         )
 
         val glNatives = Resource.compressGlNatives()