PartitionEditor: Add the beginnings of a partition editor :^)

This adds a new application PartitionEditor which will eventually be
used to create and edit partition tables. Since LibPartition does not
know how to write partition tables yet, it is currently read-only.

Devices are discovered by scanning /dev for block device files.
Since block devices are chmod 600, PartitionEditor be must run as root.

By default Serenity uses the entire disk for the ext2 filesystem
without a partition table. This isn't useful for testing as the
partition list for the default disk will be empty. To test properly,
I created a few disk images using various partitioning schemes
(MBR, EBR, and GPT) and attached them using the following command:

export SERENITY_EXTRA_QEMU_ARGS="
  -drive file=/path/to/mbr.img,format=raw,index=1,media=disk
  -drive file=/path/to/ebr.img,format=raw,index=2,media=disk
  -drive file=/path/to/gpt.img,format=raw,index=3,media=disk"

1 files changed, 4 insertions, 0 deletions

diff --git a/Base/res/apps/PartitionEditor.af b/Base/res/apps/PartitionEditor.af
new file mode 100644
index 0000000000..be15ecce37
--- /dev/null
+++ b/Base/res/apps/PartitionEditor.af
@@ -0,0 +1,4 @@
+[App]
+Name=Partition Editor
+Executable=/bin/PartitionEditor
+Category=Utilities