[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 ec5217b9d1)
(cherry picked from commit 14f08e364b)
(cherry picked from commit b4465c67b8)

[API] [SEMVER] replace number with version

(cherry picked from commit fba48e6497)
(cherry picked from commit 532ec5d878)

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

(cherry picked from commit 01ca3a4f42)
(cherry picked from commit 1d928c3ab2)
(cherry picked from commit a39dc804cd)

Conflicts:
	webpack.config.js
(cherry picked from commit adc68578b3)
(cherry picked from commit 9b8d98475f)
(cherry picked from commit 2516103974)
(cherry picked from commit 18e6287963)
(cherry picked from commit e9694e67ab)
(cherry picked from commit a9763edaf0)
(cherry picked from commit e2b550f4fb)

public/forgejo/api.v1.yml

@@ -0,0 +1,40 @@
+openapi: 3.0.0
+info:
+  title: Forgejo API
+  description: |-
+    Forgejo REST API
+
+  contact:
+    email: contact@forgejo.org
+  license:
+    name: MIT
+    url: https://codeberg.org/forgejo/forgejo/src/branch/forgejo/LICENSE
+  version: 1.0.0
+externalDocs:
+  description: Find out more about Forgejo
+  url: http://forgejo.org
+servers:
+  - url: /api/forgejo/v1
+paths:
+  /version:
+    get:
+      summary: API version
+      description: Semantic version of the Forgejo API
+      operationId: getVersion
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Version'
+components:
+  schemas:
+    Version:
+      type: object
+      properties:
+        version:
+          type: string
+