fix: say offline files are not downloaded

The line mode under --offline, with files that need the internet,
ended on Done with 0 files installed. It now counts them as not
downloaded and says --offline is why, not an answer.

install/launchers/index.json

@@ -27,8 +27,8 @@
         {
           "dest": "roms/ports/retrobios/install.py",
           "repo_path": "install.py",
-          "size": 650749,
-          "sha256": "d59defaa5802d2d7b73b4b02e693e9592618803b308eb625a6f436b8a5388464",
+          "size": 650926,
+          "sha256": "b7eec15ba746bbaaaea471396964a83a255a4a1c4bd51316fbdb0ff62a065169",
           "executable": false
         },
         {
@@ -71,8 +71,8 @@
     "muos": {
       "archive": {
         "dest": "ARCHIVE/RetroBIOS.muxapp",
-        "size": 703298,
-        "sha256": "bb54c96f4ae4850f997cc925b2958b21477be655a658b6bc3551d1aef68fdbb5"
+        "size": 703475,
+        "sha256": "1928a1ee174ab57d2890fa7d668a34fa996637669446bb6ad4329fa0fc3d76dc"
       },
       "members": [
         {
@@ -92,8 +92,8 @@
         {
           "name": "RetroBIOS/install.py",
           "repo_path": "install.py",
-          "size": 650749,
-          "sha256": "d59defaa5802d2d7b73b4b02e693e9592618803b308eb625a6f436b8a5388464",
+          "size": 650926,
+          "sha256": "b7eec15ba746bbaaaea471396964a83a255a4a1c4bd51316fbdb0ff62a065169",
           "executable": false
         },
         {
@@ -166,8 +166,8 @@
         {
           "dest": ".config/modules/retrobios/install.py",
           "repo_path": "install.py",
-          "size": 650749,
-          "sha256": "d59defaa5802d2d7b73b4b02e693e9592618803b308eb625a6f436b8a5388464",
+          "size": 650926,
+          "sha256": "b7eec15ba746bbaaaea471396964a83a255a4a1c4bd51316fbdb0ff62a065169",
           "executable": false
         },
         {