Allow default tasks to be declared in the builder > customTasks section of the ui5.yaml

[petermuessig]

Expected Behavior

Allow to define default tasks such as generateManifestBundle or generateCachebusterInfo to be declared in the ui5.yamls builder > customTasks section - similar like a custom task.

Current Behavior

Right now, this can only be done for custom tasks. You can add a default task into the list of custom tasks and the build will not fail but it will also not include the default task into the execution.

Steps to reproduce the issue

n/a

Context

latest

Affected components (if known)

• [X] ui5-builder
• [ ] ui5-server
• [ ] ui5-cli
• [ ] ui5-fs
• [ ] ui5-project
• [ ] ui5-logger

Log Output / Stack Trace

n/a