[feat] Add force_new_keygen logic

[1xstj]

Summary of changes Changes introduced in this pull request:

• Add force_new_keygen flag which bypass the regular keygen checks

Reference issue to close (if applicable) Closes #640

[codecov-commenter]

Codecov Report

Patch coverage: 20.00% and project coverage change: +0.12 :tada:

Comparison is base (7323822) 17.60% compared to head (0fecdf0) 17.72%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #649 +/- ## ========================================== + Coverage 17.60% 17.72% +0.12% ========================================== Files 77 77 Lines 5580 5589 +9 ========================================== + Hits 982 990 +8 - Misses 4598 4599 +1 ``` | [Impacted Files](https://app.codecov.io/gh/webb-tools/dkg-substrate/pull/649?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=webb-tools) | Coverage Δ | | |---|---|---| | [dkg-gadget/src/lib.rs](https://app.codecov.io/gh/webb-tools/dkg-substrate/pull/649?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=webb-tools#diff-ZGtnLWdhZGdldC9zcmMvbGliLnJz) | `0.00% <ø> (ø)` | | | [dkg-gadget/src/worker.rs](https://app.codecov.io/gh/webb-tools/dkg-substrate/pull/649?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=webb-tools#diff-ZGtnLWdhZGdldC9zcmMvd29ya2VyLnJz) | `0.00% <0.00%> (ø)` | | | [dkg-runtime-primitives/src/lib.rs](https://app.codecov.io/gh/webb-tools/dkg-substrate/pull/649?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=webb-tools#diff-ZGtnLXJ1bnRpbWUtcHJpbWl0aXZlcy9zcmMvbGliLnJz) | `51.52% <ø> (+1.52%)` | :arrow_up: | | [dkg-test-orchestrator/src/dummy\_api.rs](https://app.codecov.io/gh/webb-tools/dkg-substrate/pull/649?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=webb-tools#diff-ZGtnLXRlc3Qtb3JjaGVzdHJhdG9yL3NyYy9kdW1teV9hcGkucnM=) | `0.00% <ø> (ø)` | | | [pallets/dkg-metadata/src/lib.rs](https://app.codecov.io/gh/webb-tools/dkg-substrate/pull/649?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=webb-tools#diff-cGFsbGV0cy9ka2ctbWV0YWRhdGEvc3JjL2xpYi5ycw==) | `24.38% <75.00%> (+0.38%)` | :arrow_up: | ... and [4 files with indirect coverage changes](https://app.codecov.io/gh/webb-tools/dkg-substrate/pull/649/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=webb-tools)

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[drewstone]

Lint needs fixing @1xstj