feat: Add Makefile commands for Gitea/GitHub synchronization

This commit introduces two new Makefile targets:

- `sync-to-github`: Synchronizes the local repository to a GitHub remote.
  It will add the 'github' remote if it doesn't exist and then push all
  branches and tags. The GitHub repository URL is configurable via the
  `GITHUB_REPO_URL` variable (e.g., `https://github.com/josedario87/your-repo-name.git`).

- `sync-to-gitea`: Synchronizes the local repository to a Gitea remote.
  It will add the 'gitea' remote if it doesn't exist and then push all
  branches and tags. The Gitea repository URL is configurable via the
  `GITEA_REPO_URL` variable, which uses placeholders for server details
  (e.g., `ssh://<GITEA_USER>@<GITEA_HOST>:<GITEA_PORT>/nucleo000/your-repo-name.git`).

Both new targets have been added to `.PHONY` to ensure correct behavior.
The repository name is dynamically determined from the local Git configuration.

Makefile

@@ -1,3 +1,8 @@
+GITHUB_REPO_URL := https://github.com/josedario87/planilla.git
+GITEA_REPO_URL := ssh://<GITEA_USER>@<GITEA_HOST>:<GITEA_PORT>/nucleo000/planilla.git
+
+.PHONY: sync-to-github sync-to-gitea
+
 estructura:
 	powershell -ExecutionPolicy Bypass -File ./dev/scripts/estructura.ps1
 
@@ -14,3 +19,23 @@ down:
 	docker compose down
 
 todo: estructura build
+
+sync-to-github:
+	@echo "Synchronizing to GitHub..."
+	@if ! git remote | grep -q '^github$$'; then \
+		echo "Adding GitHub remote..."; \
+		git remote add github $(GITHUB_REPO_URL); \
+	fi
+	git push github --all
+	git push github --tags
+	@echo "Synchronization to GitHub complete."
+
+sync-to-gitea:
+	@echo "Synchronizing to Gitea..."
+	@if ! git remote | grep -q '^gitea$$'; then \
+		echo "Adding Gitea remote..."; \
+		git remote add gitea $(GITEA_REPO_URL); \
+	fi
+	git push gitea --all
+	git push gitea --tags
+	@echo "Synchronization to Gitea complete."