Provide and document options to reduce content of build result

Expected Behavior

When executing a build, a lot of files are written to the dist folder that might not be required at runtime, such as:

• All locale/language-specific files (CLDR, messagebundle_*.properties)
• All themes (incl. RTL-variants)
• Individual JS files that are part of a bundle (e.g. sap-ui-custom.js / library-preload.js / Component-preload.js)

This is relevant when packaging the app e.g. with Cordova, as the application bundle can become quite large. It also speeds up deployment e.g. when uploading the files to a server.

It would be helpful if a project could declare/define which locales/languages/themes should be supported. By default all variants should be used.

Current Behavior

It is currently only possible to exclude -dbg.js files

• via API excludedTasks: ["createDebugFiles"]
• or via CLI option --exclude-task=createDebugFiles

Context

• UI5 Module Version (output of ui5 --version when using the CLI): 0.2.6

Affected components (if known)

• ui5-builder
• ui5-server
• ui5-cli
• ui5-fs
• ui5-project
• ui5-logger

Start by reviewing the ui5-builder and ui5-cli components, including the existing createDebugFiles API and --exclude-task=createDebugFiles CLI option. Trace how build output is selected and documented, then define the supported configuration for locales, themes, and bundle-related files. Done means projects can reduce the dist contents while retaining the default of all variants, with the options documented.