feat: add is-fullscreen to list-windows json output

[jonathancyu]

No description provided.

[jonathancyu]

This is meant to resolve part of #846

[jonathancyu]

and for those curious, here's how I used it to create a fullscreen indicator in sketchybar! 😁

[nikitabobko]

Merged with the following patch on top:

diff --git a/Sources/Common/cmdArgs/impl/ListWindowsCmdArgs.swift b/Sources/Common/cmdArgs/impl/ListWindowsCmdArgs.swift
index 6f445248..d4cea430 100644
--- a/Sources/Common/cmdArgs/impl/ListWindowsCmdArgs.swift
+++ b/Sources/Common/cmdArgs/impl/ListWindowsCmdArgs.swift
@@ -58,7 +58,6 @@ public extension ListWindowsCmdArgs {
             ? [
                 .interVar("window-id"), .interVar("right-padding"), .literal(" | "),
                 .interVar("app-name"), .interVar("right-padding"), .literal(" | "),
-                .interVar("window-is-fullscreen"), .interVar("right-padding"), .literal(" | "),
                 .interVar("window-title"),
             ]
             : _format
diff --git a/docs/aerospace-list-windows.adoc b/docs/aerospace-list-windows.adoc
index 0504a15d..47e7aeb7 100644
--- a/docs/aerospace-list-windows.adoc
+++ b/docs/aerospace-list-windows.adoc
@@ -78,6 +78,7 @@ The following variables can be used inside `<output-format>`:
 
 %{window-id}:: Number. Window unique ID
 %{window-title}:: String. Window title
+%{window-is-fullscreen}:: Boolean. Is window in fullscreen by `aerospace fullscreen` command
 
 %{app-bundle-id}:: String. Application unique identifier. https://developer.apple.com/documentation/appstoreconnectapi/bundle_ids[Bundle ID]
 %{app-name}:: String. Application name