Finishing up a few things.

Architecting out a few things (including extraction)

src/extract-multi.zig

@@ -0,0 +1,18 @@
+const std = @import("std");
+const Io = std.Io;
+
+const Superblock = @import("archive.zig").Superblock;
+const Inode = @import("inode.zig");
+const Decomp = @import("decomp.zig");
+const ExtractionOptions = @import("options.zig");
+
+pub fn extract(
+    alloc: std.mem.Allocator,
+    io: Io,
+    super: Superblock,
+    data: []u8,
+    decomp: Decomp.Fn,
+    inode: Inode,
+    ext_loc: []const u8,
+    options: ExtractionOptions,
+) !void {}