Web resources
Solutions can be used to package and deploy web resources to other environments. To manually add a web resource to a solution, follow these steps.
Open the unmanaged solution you want to add the web resource to by using Power Apps
Select Add existing > Other > Web resource.
Search for the web resource by name.
Select the web resource, and then select Add
You can also add web resources to a solution by using code. Use the
SolutionUniqueName optional parameter to associate a web resource with a
specific solution when the web resource is created. This is demonstrated in this
sample: Import files as web resources.