🔥 remove ECC framework

[burgholzer]

Description

This is the pendant to https://github.com/cda-tum/mqt-qecc/pull/256 and removes the ECC framework from MQT Core. This mostly slims down the MQT Core library a little and eliminates hardly maintained code.

Checklist:

• [x] The pull request only contains commits that are related to it.
• [x] I have added appropriate tests and documentation.
• [x] I have made sure that all CI jobs on GitHub pass.
• [x] The pull request introduces no new warnings and follows the project's style guidelines.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 91.7%. Comparing base (5802520) to head (a47f234). Report is 120 commits behind head on main.

Additional details and impacted files

[](https://app.codecov.io/gh/cda-tum/mqt-core/pull/667?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum) ```diff @@ Coverage Diff @@ ## main #667 +/- ## ====================================== Coverage 91.7% 91.7% ====================================== Files 148 133 -15 Lines 14832 14106 -726 Branches 2386 2212 -174 ====================================== - Hits 13603 12945 -658 + Misses 1229 1161 -68 ``` | [Flag](https://app.codecov.io/gh/cda-tum/mqt-core/pull/667/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum) | Coverage Δ | | |---|---|---| | [cpp](https://app.codecov.io/gh/cda-tum/mqt-core/pull/667/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum) | `91.5% <ø> (+<0.1%)` | :arrow_up: | | [python](https://app.codecov.io/gh/cda-tum/mqt-core/pull/667/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum) | `99.7% <ø> (ø)` | | [see 4 files with indirect coverage changes](https://app.codecov.io/gh/cda-tum/mqt-core/pull/667/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum)