Can't detect AssemblyMetadata attribute in a SingleFile app

[caesay]

Mono.Cecil can't load an exe produced by PublishSingleFile. Do we try to read the entry assembly by looking for the bundle offset and parse the attribute? Probably not a great idea as these bundles might change significantly in future versions of dotnet.

It's also not possible to add the native SquirrelAwareApp entry to the version table (with rcedit or other) because this breaks the bundle. (see #1)

Perhaps we need a way to detect a Squirrel app that is a bit more universal. Reading exe manifest? Looking for a sidecar file (eg. myapp.exe.squirrel)?

[caesay]

An entry in the assembly manifest can now be used to indicate a squirrel aware binary. This manifest can be read from single file apps.

For example:

<?xml version="1.0" encoding="utf-8"?>
<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
  <SquirrelAwareVersion>1</SquirrelAwareVersion>
</assembly>