feat: remove source image in public to prevent leakage (#278)

* refactor: change hires loader function name

* feat: add loading transition animation and improve performance

* feat: hide image source in exampleSite

* docs: update docs for publishResources

exampleSite/content/Erwitt/index.md

@@ -8,4 +8,6 @@ menu:
     identifier: Erwitt
     title: Erwitt
 unifiedAlt: '© Elliott Erwitt'
+_build:
+  publishResources: false
 ---

exampleSite/content/Gruyaert/index.md

@@ -8,4 +8,6 @@ menu:
     identifier: Gruyaert
     title: Gruyaert
 unifiedAlt: '© Harry Gruyaert'
+_build:
+  publishResources: false
 ---

exampleSite/content/Info/index.md

@@ -8,6 +8,8 @@ menu:
     identifier: Info
     title: Info
 unifiedAlt: ''
+_build:
+  publishResources: false
 ---
 
 Bridget is a _minimal_ Hugo theme designed for photographers/visual artists.

exampleSite/content/Webb/index.md

@@ -8,4 +8,6 @@ menu:
     identifier: Webb
     title: Webb
 unifiedAlt: '© Alex Webb'
+_build:
+  publishResources: false
 ---