chore: Seperate code into multiple files for client and server.

server/typing.go

@@ -0,0 +1,26 @@
+package server
+
+import (
+	"net"
+
+	"github.com/ProtonMail/gopenpgp/v3/crypto"
+)
+
+// Bismuth Server
+type BismuthServer struct {
+	// Public key to use for transmission
+	PublicKey *crypto.Key
+	// Private key to use for transmission
+	PrivateKey *crypto.Key
+
+	pgp *crypto.PGPHandle
+
+	// Algorithm to use for encryption (currently XChaCha20Poly1305 is the only option)
+	SymmetricEncryptionAlgorithm int
+	// Servers that are signing this server. If none, this server becomes self-signed
+	// in the clients eyes
+	SigningServers []string
+
+	// Called after a successful handshake & connection.
+	HandleConnection func(conn net.Conn) error
+}