Rename Go module paths to repo.anhonesthost.net/CyberCoveLLC/threshold

Rename root, api and sdk module paths (imports, go.mod, go_package,
ldflags, build scripts, buf configs) and regenerate protobuf/gateway
code with the project's pinned toolchain. Wire identifiers unchanged.
api gets a local replace for sdk; root/api/sdk require v0.1.0.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

enos/enos-scenario-e2e-database.hcl

@@ -141,7 +141,7 @@ scenario "e2e_database" {
 
     variables {
       is_ci                    = var.is_ci
-      test_package             = "github.com/hashicorp/boundary/testing/internal/e2e/tests/database"
+      test_package             = "repo.anhonesthost.net/CyberCoveLLC/threshold/testing/internal/e2e/tests/database"
       boundary_license         = step.read_license.license
       local_boundary_dir       = local.local_boundary_dir != null ? local.local_boundary_dir : step.get_boundary_binary.path
       target_user              = "ubuntu"