Add makefile and vscode tasks file

.gitignore

@@ -0,0 +1 @@
+appstore

.vscode/tasks.json

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+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "create release",
+            "type": "shell",
+            "command": "make appstore & make sign_release",
+            "problemMatcher": [],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        },
+        {
+            "label": "appstore",
+            "type": "shell",
+            "command": "make appstore",
+        },
+        {
+            "label": "sign release",
+            "type": "shell",
+            "command": "make sign_release",
+        }
+    ]
+}

Makefile

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+app_name=breezedark
+appstore_dir=$(CURDIR)/appstore
+
+appstore:
+	rm -rf $(appstore_dir)
+	mkdir -p $(appstore_dir)
+	tar cvzf $(appstore_dir)/$(app_name).tar.gz \
+	--exclude-vcs \
+	--exclude="../$(app_name)/.github" \
+	--exclude="../$(app_name)/.vscode" \
+	--exclude="../$(app_name)/appstore" \
+	--exclude="../$(app_name)/Makefile" \
+	../$(app_name)
+
+sign_release:
+	openssl dgst -sha512 -sign $(HOME)/.nextcloud/certificates/breezedark.key $(appstore_dir)/$(app_name).tar.gz | openssl base64