feat(backend): add regional wager blocking

[yusufmuhammadayodeji-netizen]

Closes #62

Fixes #62

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[yusufmuhammadayodeji-netizen]

Hi @Kaycee276, I resolved the merge conflict against the current master branch and pushed the updated fix/issue-62 branch. GitHub now reports this PR as mergeable. Please recheck PR #200.

[yusufmuhammadayodeji-netizen]

@Kaycee276 @yusufmuhammadayodeji-netizen The safe environment fix is pushed in commit 7d2dbc5. PR #200 now references Fixes #62. Verification: branch was fetched/rebased safely and pushed without force; please rerun Backend CI.