Image resource refactor

This commit pulls most of the image related logic into its own package, to make it easier to reason about and extend.

This is also a rewrite of the transformation logic used in Hugo Pipes, mostly to allow constructs like the one below:

    {{ ($myimg | fingerprint ).Width }}

Fixes #5903
Fixes #6234
Fixes #6266

1 files changed, 0 insertions, 0 deletions

diff --git a/hugolib/assets/images/sunset.jpg b/hugolib/assets/images/sunset.jpg
new file mode 100644
index 000000000..7d7307bed
--- /dev/null
+++ b/hugolib/assets/images/sunset.jpg