Add a soprano recorder tab converter as a Linux AppImage.

The app turns a lead line into Baroque fingering tabs with rhythm kept, ships Twinkle and Ode to Joy, and reads photos locally with oemer when the bundled Python is present.

Co-authored-by: catpersonisme <catpersonisme@gmail.com>

electron-builder.yml

@@ -0,0 +1,26 @@
+appId: org.recorder.tabconverter
+productName: Recorder Tab Converter
+executableName: recorder-tab-converter
+asar: true
+# beforeBuild returns false so the project node_modules are not packed.
+# The server uses .next/standalone/node_modules, copied below. electron-builder
+# skips a root node_modules directory, so that folder is its own resource.
+beforeBuild: electron/before-build.cjs
+directories:
+  output: dist
+files:
+  - electron/**/*
+  - package.json
+extraResources:
+  - from: .next/standalone
+    to: standalone
+  - from: .next/standalone/node_modules
+    to: standalone/node_modules
+  - from: build/python
+    to: python
+linux:
+  target:
+    - AppImage
+  category: AudioVideo
+  icon: electron/icon.png
+  artifactName: Recorder-Tab-Converter-${version}.${ext}