Typescript configuration for Fiori elements apps

[c-kobo]

This PR enables typescript for both apps Travel Processor and Travel Analytics.
Additionally, for the Travel Processor App, the following flexible programming model based extensions are added:

• a custom section combining a message strip and a table building block. This replaces the standard booking table section
• a controller extension: when saving, it is checked whether trees-4-tickets checkbox has been selected, a dialog is shown giving the user the option to do so before save continues.

[devinea]

@c-kobo A few small comments to align with fiori tools generation of new projects.
I noticed a test failing here.
http://localhost:4004/sap.fe.cap.travel/test/integration/Opa.qunit.html

[c-kobo]

Wrt to the failing OPA tests, my colleague @ARiesterer will try to take a look into it.

[c-kobo]

Wrt to the failing OPA tests, my colleague @ARiesterer will try to take a look into it.

OPA tests should be fine again now.

[c-kobo]

Jest tests still failing.

[c-kobo]

@stewsk @chgeo the jest tests fail due to an incompability with cds-plugin-ui5.
Seems to be an issue with jest and node in combination with plugins.
@petermuessig described a workaround here (requires upgrade to node21):
ui5-community/ui5-ecosystem-showcase#901 (comment)