Feature/ssl integration (#1)

* feat: update E2E testing configuration to use ssl

* fix: add IPv6 loopback support to mkcert generation command in CI workflow

* feat: centralize SSL certificate generation into a reusable workflow job

* fix: use static ip  in mkcert command

* fix: correct mkcert command args

* feat: implement certificate caching in CI workflow to persist SSL files across jobs

* refactor: optimize CI workflow caching

* ci: implement certificate caching in workflow

* fix: correct certificate caching keys and fix environment file paths in CI workflows

* fix: correct environment file paths and parallelize frontend dependency installation in CI workflow

* test: set TZ environment variable to Asia/Kolkata in vitest configuration

* fix: force en-US locale in Intl formatters to ensure consistent date and time output

* fix: update MAILPIT_API_URL protocol from https to http in e2e environment example

* chore: set test timezone to Asia/Kolkata

* ci: add sll support and enhance e2e workflow

* ci: improve compatibility for docker-compose execution

* refactor: improve container orchestration detection and fallback logic in e2e test script

* feat: add container runtime validation and force docker usage in CI environment

* feat: add caching for Playwright dependencies in CI workflow

* chore: update restart policy to unless-stopped for postgres and mailpit services in e2e docker-compose

---------

Co-authored-by: ramvignesh-b <ramvignesh-b@github.com>

.env.e2e.example

@@ -1,25 +1,27 @@
-# Pi Ku E2E Environment Configuration Template
+# DATABASE
+DB_NAME=piku_test_db
+DB_USER=test
+DB_PASSWORD=password123
+DB_HOST=localhost
+DB_PORT=5433
 
-# Database (Postgres)
-E2E_DB_NAME=piku_e2e_db
-E2E_DB_PORT=5433
-E2E_DB_USER=piku_test
-E2E_DB_PASS=piku_test
-E2E_DB_DB=piku_e2e
+# SSL
+SSL_ENABLED=false
 
-# Backend (Django)
-E2E_BACKEND_PORT=8001
-SECRET_KEY=e2e-secret-key-for-piku-testing
+# DJANGO
 DEBUG=True
-ALLOWED_HOSTS=*
-CORS_ALLOWED_ORIGINS=http://localhost:5173
-FRONTEND_URL=http://localhost:5173
-EMAIL_HOST=localhost
-EMAIL_PORT=1025
+SECRET_KEY=django-insecure-initial-key
+BACKEND_DOMAIN=127.0.0.1
+BACKEND_PORT=8001
+
+# EMAIL
+EMAIL_HOST=127.0.0.1
+EMAIL_PORT=1026
+FROM_EMAIL="Test <test@pi-ku.app>"
 EMAIL_HOST_USER=
 EMAIL_HOST_PASSWORD=
-FROM_EMAIL=testing@piku.local
-MAILPIT_API_URL=http://localhost:8025/api/v1
+EMAIL_API_PORT=8026
 
-# Frontend (Vite/Playwright)
-VITE_API_URL=http://localhost:8001
+# FRONTEND
+FRONTEND_PORT=5199
+FRONTEND_DOMAIN=127.0.0.1