feat: list declarations under a public module if applicable

[lars-reimann]

Closes #509.

Summary of Changes

• If declarations are declared in a private module but reexported in a public one they are now properly shown underneath the public module in the tree view. This considerably cleans up the tree view.
• The usage count attached to modules (see feat(gui): module usages/usefulness #642) also makes more sense now.
• Moreover, when adapters are generated, they also match the public module structure now without exposing internal details.

Screenshots (if necessary)

[github-actions]

MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ CREDENTIALS	secretlint	yes		no	4.24s
✅ GIT	git_diff	yes		no	0.01s
✅ JSON	eslint-plugin-jsonc	1	0	0	16.6s
✅ JSON	jsonlint	1		0	4.38s
✅ JSON	prettier	1	0	0	10.23s
✅ JSON	v8r	1		0	1.96s
✅ PYTHON	bandit	2		0	0.58s
✅ PYTHON	black	2	0	0	0.82s
✅ PYTHON	flake8	2		0	0.78s
✅ PYTHON	isort	2	0	0	0.23s
✅ PYTHON	mypy	2		0	10.78s
✅ PYTHON	pylint	2		0	5.96s
✅ TSX	eslint	21	0	0	15.94s
✅ TYPESCRIPT	eslint	20	0	0	10.48s
✅ TYPESCRIPT	prettier	41	0	0	3.83s

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