Refactor signer implementation to use p8k package

- Replaced all instances of p256k1signer with the new p8k.Signer across various modules, including event creation, policy handling, and database interactions.
- Updated related test cases and benchmarks to ensure compatibility with the new signer interface.
- Bumped version to v0.25.0 to reflect these significant changes and improvements in cryptographic operations.

pkg/database/benchmark_test.go

@@ -9,7 +9,7 @@ import (
 	"testing"
 
 	"lol.mleku.dev/chk"
-	p256k1signer "p256k1.mleku.dev/signer"
+	"next.orly.dev/pkg/interfaces/signer/p8k"
 	"next.orly.dev/pkg/database/indexes/types"
 	"next.orly.dev/pkg/encoders/event"
 	"next.orly.dev/pkg/encoders/event/examples"
@@ -73,7 +73,7 @@ func BenchmarkSaveEvent(b *testing.B) {
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
 		// Create a simple test event
-		signer := p256k1signer.NewP256K1Signer()
+		signer := p8k.MustNew()
 		if err := signer.Generate(); err != nil {
 			b.Fatal(err)
 		}