Asset Helpers `Lucky` vs `::Lucky`

[robacarp]

Describe the bug

Currently when I run my app I get this:

web    | In lib/lucky/src/lucky/asset_helpers.cr:41:13
web    | 
web    |  41 | {% if Lucky::AssetHelpers::ASSET_MANIFEST[path] %}
web    |             ^----------------------------------
web    | Error: undefined constant Lucky::AssetHelpers::ASSET_MANIFEST

I'm able to fix the bug and move on by rewriting Lucky::AssetHelpers to ::Lucky::AssetHelpers in this stanza of code.

Versions (please complete the following information):

• Lucky version (check in shard.lock): version: 0.30.1 (also confirmed on Crystal 1.4.1)
• Crystal version (crystal --version): Crystal 1.2.2 [6529d725a] (2021-11-10)
• OS: macos m1