Legacy sampsharp migration

[ikkentim]

Migrate all code to src/legacy in preparation for importing code from https://github.com/SampSharp/openmp-sampsharp-x64-poc

[ikkentim]

@copilot resolve the merge conflicts in this pull request; both commits from master have been cherry picked to the pr branch already.

[Copilot]

@copilot resolve the merge conflicts in this pull request; both commits from master have been cherry picked to the pr branch already.

Merged origin/master into the PR branch — no conflicts since both commits were already cherry-picked. Merge commit: 7664908.

[ikkentim]

@copilot in all the workflows, legacy-sampsharp-migration is included in the branches; this was to test the workflows. before we can merge this PR, this branch needs to be removed from the workflows

[Copilot]

@copilot in all the workflows, legacy-sampsharp-migration is included in the branches; this was to test the workflows. before we can merge this PR, this branch needs to be removed from the workflows

Removed legacy-sampsharp-migration from the push branches in all 6 workflows. Commit: e9c6ffb.