Feat/graph utils

[hsjobeki]

Adds some graph utilities.
(Renamed findCycles.nix into graphUtils.nix)

• SanitizeGraph returns a nix buildable dependency tree. (Even if the previous graph has cycles)
• Compat functions that allow backwards compatibility for potential use cases in V1 (node granularBuilder)

Still TODO: Fix the old cycle remover, so it supports

Multiple connected cycles in the graph

e.g.

a->c
b->c
c->d
d->a
d->b

[DavHau]

@mergify rebase

[mergify]

rebase

✅ Branch has been successfully rebased

[DavHau]

@mergify rebase

[mergify]

rebase

❌ Base branch update has failed

Git reported the following error:

Rebasing (1/6)
Rebasing (2/6)
Rebasing (3/6)
Auto-merging tests/nix-unit/test_graph_utils/default.nix
CONFLICT (add/add): Merge conflict in tests/nix-unit/test_graph_utils/default.nix
Auto-merging tests/nix-unit/test_graph_utils/findCycles.nix
CONFLICT (content): Merge conflict in tests/nix-unit/test_graph_utils/findCycles.nix
Auto-merging tests/nix-unit/test_graph_utils/sanitizeGraph.nix
CONFLICT (add/add): Merge conflict in tests/nix-unit/test_graph_utils/sanitizeGraph.nix
error: could not apply afdb019... add more graph utilities
hint: Resolve all conflicts manually, mark them as resolved with
hint: "git add/rm <conflicted_files>", then run "git rebase --continue".
hint: You can instead skip this commit: run "git rebase --skip".
hint: To abort and get back to the state before "git rebase", run "git rebase --abort".
Could not apply afdb019... add more graph utilities