upgpkg: franz 5.5.0-4

- Using Electron 9, which is not the official one but still the last one
  I got working thanks to @yuyichaoi & working with the stable, not-beta
  version of Franz
- Preparation steps have been reorganized and got better comments.
- The package is version-locked against the build-time `electron9`
  package
  -> when it should be upgraded, it will fail and people will properly
  complain about it ;)
- The `franz.sh` script is generated from `franz.sh.in`
  -> switching between Electron packages is now easy.
- Added `python2` as `makedepends` for `node-sass`.

1 files changed, 3 insertions, 0 deletions

diff --git a/franz.sh.in b/franz.sh.in
new file mode 100644
index 000000000000..a9728ff27348
--- /dev/null
+++ b/franz.sh.in
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec @ELECTRON@ /usr/lib/franz/resources/app.asar "$@"