feat: migrate from Cedar to SpiceDB authorization system

This is a major architectural change that replaces the Cedar policy-based
authorization system with SpiceDB's relation-based authorization.

Key changes:

- Migrate from Rust to Go implementation
- Replace Cedar policies with SpiceDB schema and relationships
- Switch from envoy `ext_authz` with Cedar to SpiceDB permission checks
- Update build system and dependencies for Go ecosystem
- Maintain Envoy integration for external authorization

This change enables more flexible permission modeling through SpiceDB's
Google Zanzibar inspired relation-based system, supporting complex
hierarchical permissions that were difficult to express in Cedar.

Breaking change: Existing Cedar policies and Rust-based configuration
will no longer work and need to be migrated to SpiceDB schema.

1 files changed, 53 insertions, 0 deletions

diff --git a/vendor/github.com/google/yamlfmt/internal/logger/debug.go b/vendor/github.com/google/yamlfmt/internal/logger/debug.go
new file mode 100644
index 00000000..5a82c3c1
--- /dev/null
+++ b/vendor/github.com/google/yamlfmt/internal/logger/debug.go
@@ -0,0 +1,53 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package logger
+
+import (
+	"fmt"
+
+	"github.com/google/yamlfmt/internal/collections"
+)
+
+type DebugCode int
+
+const (
+	DebugCodeAny DebugCode = iota
+	DebugCodeConfig
+	DebugCodePaths
+	DebugCodeDiffs
+)
+
+var (
+	supportedDebugCodes = map[string][]DebugCode{
+		"config": {DebugCodeConfig},
+		"paths":  {DebugCodePaths},
+		"diffs":  {DebugCodeDiffs},
+		"all":    {DebugCodeConfig, DebugCodePaths, DebugCodeDiffs},
+	}
+	activeDebugCodes = collections.Set[DebugCode]{}
+)
+
+func ActivateDebugCode(code string) {
+	if debugCodes, ok := supportedDebugCodes[code]; ok {
+		activeDebugCodes.Add(debugCodes...)
+	}
+}
+
+// Debug prints a message if the given debug code is active.
+func Debug(code DebugCode, msg string, args ...any) {
+	if activeDebugCodes.Contains(code) {
+		fmt.Printf("[DEBUG]: %s\n", fmt.Sprintf(msg, args...))
+	}
+}