feat: cleanup init code, small other refactors

kernel/vfs/blockdev.c

@@ -11,6 +11,7 @@
 #include <myke/libk/libk.h>
 #include <myke/tasks/locking.h>
 #include <myke/tasks/task.h>
+#include <myke/util/init.h>
 
 #define MAX_BLOCK_DEVS 64
 
@@ -142,4 +143,10 @@ void block_dev_print_info() {
                block_devices[i].identifier,
                block_devices[i].flags.driver_installed ? block_devices[i].driver->name : "n/a");
     }
-}
+}
+
+INIT_FUNCTION(100) = {
+        .name = "blockdev-task",
+        .stage = INIT_STAGE_PRE_TASKING,
+        .init = block_dev_start_task,
+};

kernel/vfs/tmpfs.c

@@ -9,5 +9,6 @@ void tmpfs_init() {
 
 INIT_FUNCTION(100) = {
         .name = "tmpfs",
+        .stage = INIT_STAGE_AFTER_BOOT_PRE_INIT,
         .init = tmpfs_init,
 };