[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)
(cherry picked from commit 5df876e19e)

tests/integration/api_forgejo_version_test.go

@@ -0,0 +1,25 @@
+// Copyright The Forgejo Authors.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"net/http"
+	"testing"
+
+	"code.gitea.io/gitea/routers/api/forgejo/v1"
+	"code.gitea.io/gitea/tests"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAPIForgejoVersion(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	req := NewRequest(t, "GET", "/api/forgejo/v1/version")
+	resp := MakeRequest(t, req, http.StatusOK)
+
+	var version v1.Version
+	DecodeJSON(t, resp, &version)
+	assert.Equal(t, "development", *version.Version)
+}