Fix cell-path in themes (#911)

Four minor changes:

* As previously mentioned, updates `make.nu` to use `cell-path` rather
than `cellpath`
* Slight improvements on #905 (cc @amtoine) - The last theme converted
was the only one printed via `info`, but it didn't get removed from the
screen. Things moved so fast on my system that it looked like only one
theme was being converted, since that's the only message that was left
on the screen ;-). Now prints a "Done" message showing how many themes
were converted and how many failed.
* There was a previous update to `catppuccin-latte.nu` that was
apparently made directly to the theme, rather than the custom src.
Synced these up.
* Bumped `nupm.nuon`

themes/nupm.nuon

@@ -3,6 +3,6 @@
     description: "Officially-supported themes for Nushell"
     documentation: "https://github.com/nushell/nu_scripts/blob/main/README.md"
     license: "https://github.com/nushell/nu_scripts/blob/main/LICENSE"
-    version: 0.3.0
+    version: 0.4.0
     type: "module"
 }

themes/src/custom-nu-themes/catppuccin-latte.nu

@@ -111,4 +111,5 @@ export def main [] {
         background: $color_palette.base
         foreground: $color_palette.text
         cursor: $color_palette.blue
-}}
+    }
+}

themes/src/make.nu

@@ -84,7 +84,7 @@ def make_color_config [ name: string, source: string = "lemnos" ] {
                     string: '($colors.color7)'
                     nothing: '($colors.color7)'
                     binary: '($colors.color7)'
-                    cellpath: '($colors.color7)'
+                    cell-path: '($colors.color7)'
                     row_index: { fg: '($colors.color2)' attr: 'b' }
                     record: '($colors.color7)'
                     list: '($colors.color7)'
@@ -251,10 +251,11 @@ def main [] {
             $t
         }
     }
+    info -n $"Completed converting (($themes | length) - ($failed | length)) themes         \r"
 
     print ''
     if not ($failed | is-empty) {
-        warn "The following themes have failed:"
+        warn $"The following ($failed | length) themes have failed:"
         print $failed
     } else {
         print "all done"