[API] Forgejo API /api/forgejo/v1

(cherry picked from commit 20b5669269)
(cherry picked from commit 1574643a6a)

Update semantic version according to specification

(cherry picked from commit 22510f4130)

Mise à jour de 'Makefile'

(cherry picked from commit c3d85d8409)
(cherry picked from commit 5ea2309851)
(cherry picked from commit 4f3970e6c4)

[API] [SEMVER] replace number with version

[API] [SEMVER] [v1.20] less is replaced by css

(cherry picked from commit 43a3a40825)
(cherry picked from commit 669cea25bb)
(cherry picked from commit e25190d2b4)

routers/api/forgejo/v1/api.go

@@ -0,0 +1,18 @@
+// Copyright 2023 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1
+
+import (
+	gocontext "context"
+
+	"code.gitea.io/gitea/modules/web"
+)
+
+func Routes(ctx gocontext.Context) *web.Route {
+	m := web.NewRoute()
+	forgejo := NewForgejo()
+	m.Get("", Root)
+	m.Get("/version", forgejo.GetVersion)
+	return m
+}