feat(server): role based authentication system (#2434)

- Parse toml configuration file, see https://github.com/qdm12/gluetun-wiki/blob/main/setup/advanced/control-server.md#authentication
- Retro-compatible with existing AND documented routes, until after v3.41 release
- Log a warning if an unprotected-by-default route is accessed unprotected
- Authentication methods: none, apikey, basic
- `genkey` command to generate API keys
- move log middleware to internal/server/middlewares/log

Co-authored-by: Joe Jose <45399349+joejose97@users.noreply.github.com>

internal/server/middlewares/auth/mocks_test.go

@@ -0,0 +1,68 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/qdm12/gluetun/internal/server/middlewares/auth (interfaces: DebugLogger)
+
+// Package auth is a generated GoMock package.
+package auth
+
+import (
+	reflect "reflect"
+
+	gomock "github.com/golang/mock/gomock"
+)
+
+// MockDebugLogger is a mock of DebugLogger interface.
+type MockDebugLogger struct {
+	ctrl     *gomock.Controller
+	recorder *MockDebugLoggerMockRecorder
+}
+
+// MockDebugLoggerMockRecorder is the mock recorder for MockDebugLogger.
+type MockDebugLoggerMockRecorder struct {
+	mock *MockDebugLogger
+}
+
+// NewMockDebugLogger creates a new mock instance.
+func NewMockDebugLogger(ctrl *gomock.Controller) *MockDebugLogger {
+	mock := &MockDebugLogger{ctrl: ctrl}
+	mock.recorder = &MockDebugLoggerMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockDebugLogger) EXPECT() *MockDebugLoggerMockRecorder {
+	return m.recorder
+}
+
+// Debugf mocks base method.
+func (m *MockDebugLogger) Debugf(arg0 string, arg1 ...interface{}) {
+	m.ctrl.T.Helper()
+	varargs := []interface{}{arg0}
+	for _, a := range arg1 {
+		varargs = append(varargs, a)
+	}
+	m.ctrl.Call(m, "Debugf", varargs...)
+}
+
+// Debugf indicates an expected call of Debugf.
+func (mr *MockDebugLoggerMockRecorder) Debugf(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	varargs := append([]interface{}{arg0}, arg1...)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Debugf", reflect.TypeOf((*MockDebugLogger)(nil).Debugf), varargs...)
+}
+
+// Warnf mocks base method.
+func (m *MockDebugLogger) Warnf(arg0 string, arg1 ...interface{}) {
+	m.ctrl.T.Helper()
+	varargs := []interface{}{arg0}
+	for _, a := range arg1 {
+		varargs = append(varargs, a)
+	}
+	m.ctrl.Call(m, "Warnf", varargs...)
+}
+
+// Warnf indicates an expected call of Warnf.
+func (mr *MockDebugLoggerMockRecorder) Warnf(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	varargs := append([]interface{}{arg0}, arg1...)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Warnf", reflect.TypeOf((*MockDebugLogger)(nil).Warnf), varargs...)
+}