Integration of more functionality from the open-ux-tools

[tobiasqueck]

This PR adds the sub-generators

• enablefpm: enhances the manifest.json with all required settings for the Fiori elements FPM (using the @sap-ux/fe-fpm-writer)
• newfpmpage: adds a custom FPM page and if required a datasource and model for an odata v4 service (using the @sap-ux/fe-fpm-writer and @sap-ux/service-writer)

And enhances the existing sub-generators

• app: additional prompt to ask if FPM should be enabled, and if yes, calls the two new FPM sub-generators
• newwebapp: improved the integration of the @sap-ux/fiori-freestyle-writer and added special handling for FPM enable projects
• set default ui5 version 1.102 (supported until 2023)

Open problems:

• the @sap-ux/odata-service-writer cannot handle the easyUI5 project structure since it expects a package.json in the same folder as the ui5.yaml (planned to be corrected with https://github.com/SAP/open-ux-tools/pull/501)

[vobu]

@tobiasqueck wanted to tackle this mystique nr 42, but still in status "Draft"?!

[tobiasqueck]

@tobiasqueck wanted to tackle this mystique nr 42, but still in status "Draft"?!

OMG, I forgot it yesterday. Marking it ready for review was part of my demo script!

[petermuessig]

😱

[tobiasqueck]

Thanks @vobu !