Feature/diagram script

[mariusconjeaud]

First stab at generating model diagrams (arrows, and maybe puml in dot notation) from neomodel classes.

Usage like : neomodel_generate_diagram test/diagram_classes.py --file-type arrows --write-to-dir test/data

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 93.93939% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 91.30%. Comparing base (9304000) to head (380bc1b). Report is 3 commits behind head on rc/5.3.1.

Files	Patch %	Lines
neomodel/scripts/neomodel_generate_diagram.py	95.45%	5 Missing :warning:
neomodel/scripts/utils.py	85.71%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## rc/5.3.1 #803 +/- ## ============================================ + Coverage 91.19% 91.30% +0.11% ============================================ Files 32 34 +2 Lines 4450 4566 +116 ============================================ + Hits 4058 4169 +111 - Misses 392 397 +5 ```

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[sonarcloud[bot]]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud