IBX-10173: Extract webpack files from root dir

[GrabowskiM]

🎫 Issue	IBX-10173

Description:

That's why I vouched for not using path.resolve in requires - changes from root dir broke this bundle...

Also, most of these changes are only because of linter/prettier

For QA:

Documentation:

[Copilot]

Pull Request Overview

This PR moves webpack configuration logic out of the project root into the @ibexa/frontend-config package, refactors the custom Encore setup into a reusable function, and applies linter/prettier-driven formatting fixes.

• Swap root‐relative requires for the new frontend‐config manager package
• Wrap the Encore build steps in a getCustomConfig function and export it
• Clean up formatting in JS code and add the new frontend‐config devDependency

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/bundle/Resources/public/js/CKEditor/embed/image/embed-image-editing.js	Removed // eslint-disable-next-line and adjusted blank line before innerHTML.
src/bundle/Resources/encore/ibexa.webpack.custom.config.js	Replaced path.resolve manager require, refactored into getCustomConfig, and updated Encore chaining.
package.json	Added @ibexa/frontend-config to devDependencies.

Comments suppressed due to low confidence (2)

src/bundle/Resources/public/js/CKEditor/embed/image/embed-image-editing.js:153

• [nitpick] Removing this // eslint-disable-next-line may cause lint errors on the next line. Re-add it or update the ESLint config to allow this inline HTML construction.

                    // note: do not reformat - configuration value for image embeds cannot contain whitespaces

src/bundle/Resources/encore/ibexa.webpack.custom.config.js:5

• [nitpick] Continuing to use path.resolve for this require can reintroduce root-path issues. Consider importing via a package alias or a relative path to maintain consistency.

const configManagers = require(path.resolve('./var/encore/ibexa.richtext.config.manager.js'));

[Copilot]

The second Encore.reset() right before returning customConfig will clear all previously chained settings, leading to an empty or default config. Remove this reset or relocate it.

Suggested change

Encore.reset();

[Copilot]

The git URL fragment #^v5.0.0-beta1 mixes a caret with a git ref, which may not be supported by all package managers. Consider using a branch name (e.g. #v5.0.0-beta1) or a semver tag.

Suggested change

	"@ibexa/frontend-config": "https://github.com/ibexa/frontend-config#^v5.0.0-beta1",
	"@ibexa/frontend-config": "https://github.com/ibexa/frontend-config#v5.0.0-beta1",