V2 alpha - initial version (#172)

Initial alpha codebase for version 2 of WireGuard Portal.
This version is considered unstable and incomplete (for example, no public REST API)! 
Use with care!


Fixes/Implements the following issues:
 - OAuth support #154, #1 
 - New Web UI with internationalisation support #98, #107, #89, #62
 - Postgres Support #49 
 - Improved Email handling #47, #119 
 - DNS Search Domain support #46 
 - Bugfixes #94, #48 

---------

Co-authored-by: Fabian Wechselberger <wechselbergerf@hotmail.com>

internal/app/api/v0/model/models_authentication.go

@@ -0,0 +1,41 @@
+package model
+
+import "github.com/h44z/wg-portal/internal/domain"
+
+type LoginProviderInfo struct {
+	Identifier  string `json:"Identifier" example:"google"`
+	Name        string `json:"Name" example:"Login with Google"`
+	ProviderUrl string `json:"ProviderUrl" example:"/auth/google/login"`
+	CallbackUrl string `json:"CallbackUrl" example:"/auth/google/callback"`
+}
+
+func NewLoginProviderInfo(src *domain.LoginProviderInfo) *LoginProviderInfo {
+	return &LoginProviderInfo{
+		Identifier:  src.Identifier,
+		Name:        src.Name,
+		ProviderUrl: src.ProviderUrl,
+		CallbackUrl: src.CallbackUrl,
+	}
+}
+
+func NewLoginProviderInfos(src []domain.LoginProviderInfo) []LoginProviderInfo {
+	accessories := make([]LoginProviderInfo, len(src))
+	for i := range src {
+		accessories[i] = *NewLoginProviderInfo(&src[i])
+	}
+	return accessories
+}
+
+type SessionInfo struct {
+	LoggedIn       bool    `json:"LoggedIn"`
+	IsAdmin        bool    `json:"IsAdmin,omitempty"`
+	UserIdentifier *string `json:"UserIdentifier,omitempty"`
+	UserFirstname  *string `json:"UserFirstname,omitempty"`
+	UserLastname   *string `json:"UserLastname,omitempty"`
+	UserEmail      *string `json:"UserEmail,omitempty"`
+}
+
+type OauthInitiationResponse struct {
+	RedirectUrl string
+	State       string
+}