fix(preview-middleware): default flp.libs parameter to true

[heimwege]

• default the flp.libs parameter of preview-middleware to true for edmx backends
• override the flp.libs parameter of preview-middleware to false for cap
• for compatibility reasons: enhance the serve-static-middleware to additionally serve paths that start with /resources w/o the /resources part (excluding /resources as standalone path) to ensure that the workaround to use servestatic on /resources/my/custom/lib because the flp.libs parameter was not known/used will still continue to work.

Sample: An existing path configuration /resources/my/custom/lib to serve a custom library locally w/o flp.libs true will have two servestatic paths.

1. /resources/my/custom/lib <-- the existing one remains unchanged, but will no longer be used because
2. /my/custom/lib <-- the new flp.libs default true will add the custom library and its respective ABAP backend url to the UI5 loader configuration; That's why we add this path configuration on-the-fly to ensure compatibility with the new flp.libs true default

Sample: An existing path configuration /resources will remain unchanged and still only has one servestatic path so that the whole UI5 framework can still be served locally

1. /resources <-- the existing one remains unchanged, and will continue to work

[changeset-bot]

🦋 Changeset detected

Latest commit: cf88b83

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@sap-ux-private/preview-middleware-client	Patch
@sap-ux/preview-middleware	Patch
@sap-ux/serve-static-middleware	Patch
@sap-ux/create	Patch

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[tobiasqueck]

The PR contains quite a lot of changes but in the end you just set the default to true for edmx and added a workaround to the serve static middleware. The rest is code restructurings and cleanups, correct?
That mix made the review a little more time consuming but in the end, the code is now cleaner and better structured. The functional change is also a good idea and should have been done a long time ago (I missed it when creating the initial version of this code). The workaround in the serve static middleware will cause confusion in the future - I am sure of it - but I understand it is required to keep existing setups working as-is.

[heimwege]

@tobiasqueck it also fixes an issue that the list of UI5 libs is not static but depending on the actual UI5 version. So we now load it from the UI5 version and only use a static list as fallback. Basically this fixes parts of #2683

[devinea]

Thanks @heimwege. Changes look good.
Haven't tested locally.
changeset ✅

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.3% Coverage on New Code
0.0% Duplication on New Code

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