Add ThemeImages API

- Add ThemeImages Entity
- Add ThemeImages DataProvider
- Add ThemeImage Service
-- Retrieves the list of images for a given theme
- Add ThemeImagesFinder
-- looks up for images inside a given path
-- Add configuration to specify theme image paths
-- Add configuration to specify supported image types
- Add unit tests
- Add theme-images angular facade
- Update base metadata resolver to load theme images
-- Move UserPreferences loading ot base metadata resolver
-- Loaded theme images after user preference and config loading
--- uses default_theme, if user preferences weren't loaded
-- Add jasmine tests
- Add scrm-image component
-- Add jasmine tests
- Replace usages of svg-icon with image component
-- Fix jasmine tests
- Adjust UserPreference interface to match the current data

config/services.yaml

@@ -28,6 +28,8 @@ services:
       $menuItemMap: '%legacy.menu_item_map%'
       $legacyAssetPaths: '%legacy.asset_paths%'
       $exposedUserPreferences: '%legacy.exposed_user_preferences%'
+      $themeImagePaths: '%themes.image_paths%'
+      $themeImageSupportedTypes: '%themes.image_supported_types%'
   _instanceof:
     App\Service\ProcessHandlerInterface:
       tags: ['app.process.handler']

config/services/legacy/exposed_system_configs.yaml

@@ -5,3 +5,4 @@ parameters:
             forgotpasswordON: true
         languages: true
         default_module: true
+        default_theme: true

config/services/themes/image_paths.yaml

@@ -0,0 +1,9 @@
+parameters:
+  themes.image_paths:
+    # Order matters, lower ones will override the above ones
+    - 'legacy/themes/default/images'
+    - 'legacy/custom/themes/default/images'
+    - 'core/app/themes/default/images'
+    - 'legacy/themes/<theme>/images'
+    - 'legacy/custom/themes/<theme>/images'
+    - 'core/app/themes/<theme>/images'

config/services/themes/image_supported_types.yaml

@@ -0,0 +1,8 @@
+parameters:
+  themes.image_supported_types:
+    # Order matters, top most ones will have priority over the lower ones
+    - 'svg'
+    - 'png'
+    - 'jpg'
+    - 'jpeg'
+    - 'gif'