✨(project) Django boilerplate

This commit introduces a boilerplate inspired by https://github.com/numerique-gouv/impress.
The code has been cleaned to remove unnecessary Impress logic and dependencies.

Changes made:
- Removed Minio, WebRTC, and create bucket from the stack.
- Removed the Next.js frontend (it will be replaced by Vite).
- Cleaned up impress-specific backend logics.

The whole stack remains functional:
- All tests pass.
- Linter checks pass.
- Agent Connexion sources are already set-up.

Why clear out the code?

To adhere to the KISS principle, we aim to maintain a minimalist codebase. Cloning Impress
allowed us to quickly inherit its code quality tools and deployment configurations for staging,
pre-production, and production environments.

What’s broken?
- The tsclient is not functional anymore.
- Some make commands need to be fixed.
- Helm sources are outdated.
- Naming across the project sources are inconsistent (impress, visio, etc.)
- CI is not configured properly.

This list might be incomplete. Let's grind it.

src/helm/helmfile.yaml

@@ -0,0 +1,82 @@
+repositories:
+- name: bitnami
+  url: registry-1.docker.io/bitnamicharts
+  oci: true
+
+releases:
+  - name: postgres
+    installed: {{ eq .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: bitnami/postgresql
+    version: 13.1.5
+    values:
+      - auth:
+          username: dinum
+          password: pass
+          database: impress
+      - tls:
+          enabled: true
+          autoGenerated: true
+
+  - name: minio
+    installed: {{ eq .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: bitnami/minio
+    version: 12.10.10
+    values: 
+      - auth:
+          rootUser: impress
+          rootPassword: password
+      - provisioning:
+          enabled: true
+          buckets:
+            - name: impress-media-storage
+              versioning: true
+
+  - name: redis
+    installed: {{ eq .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: bitnami/redis
+    version: 18.19.2
+    values:
+      - auth:
+          password: pass
+        architecture: standalone
+
+  - name: extra
+    installed: {{ ne .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: ./extra
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml
+
+  - name: impress
+    version: {{ .Values.version }}
+    namespace: {{ .Namespace }}
+    chart: ./impress
+    values:
+      - env.d/{{ .Environment.Name }}/values.impress.yaml.gotmpl
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml
+
+environments:
+  dev:
+    values:
+      - version: 0.0.1
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml
+  staging:
+    values:
+      - version: 0.0.1
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml
+  preprod:
+    values:
+      - version: 0.0.1
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml
+  production:
+    values:
+      - version: 0.0.1
+    secrets:
+      - env.d/{{ .Environment.Name }}/secrets.enc.yaml