Peer management login (#83)

* feature: replace RegisterPeer with Login method that does both - registration and login

* test: add management login test

* feature: add WiretrusteeConfig to the Login response to configure peer global config

* feature: add client peer login support

* fix: missing parts

* chore: update go deps

* feature: support Management Service gRPC endpoints [CLIENT]

* feature: finalize client sync with management

* fix: management store peer key lower case restore

* fix: management returns peer ip without a mask

* refactor: remove cmd pkg

* fix: invalid tun interface name on mac

* fix: timeout when calling management client

* fix: tests and lint errors

* fix: golang-test workflow

* fix: client service tests

* fix: iface build

* feature: detect management scheme on startup

* chore: better logs for management

* fix: goreleaser

* fix: lint errors

* fix: signal TLS

* fix: direct Wireguard connection

* chore: verbose logging on direct connection

client/internal/cond.go

@@ -0,0 +1,32 @@
+package internal
+
+import "sync"
+
+// A Cond is a condition variable like sync.Cond, but using a channel so we can use select.
+type Cond struct {
+	once sync.Once
+	C    chan struct{}
+}
+
+// NewCond creates a new condition variable.
+func NewCond() *Cond {
+	return &Cond{C: make(chan struct{})}
+}
+
+// Do runs f if the condition hasn't been signaled yet. Afterwards it will be signaled.
+func (c *Cond) Do(f func()) {
+	c.once.Do(func() {
+		f()
+		close(c.C)
+	})
+}
+
+// Signal closes the condition variable channel.
+func (c *Cond) Signal() {
+	c.Do(func() {})
+}
+
+// Wait waits for the condition variable channel to close.
+func (c *Cond) Wait() {
+	<-c.C
+}