Merge pull request #25561 from glepnir/9663

feat(float): add fclose command

runtime/doc/index.txt

@@ -1288,6 +1288,7 @@ tag		command		action ~
 |:execute|	:exe[cute]	execute result of expressions
 |:exit|		:exi[t]		same as ":xit"
 |:exusage|	:exu[sage]	overview of Ex commands
+|:fclose|	:fc[lose]	close floating window
 |:file|		:f[ile]		show or set the current file name
 |:files|	:files		list all files in the buffer list
 |:filetype|	:filet[ype]	switch file type detection on/off

runtime/doc/news.txt

@@ -187,6 +187,8 @@ The following new APIs and features were added.
 
 • |$NVIM_APPNAME| can be set to a relative path instead of only a name.
 
+• Added |:fclose| command.
+
 ==============================================================================
 CHANGED FEATURES                                                 *news-changed*
 

runtime/doc/windows.txt

@@ -392,6 +392,11 @@ CTRL-W CTRL-O					*CTRL-W_CTRL-O* *:on* *:only*
 		given, then they become hidden.  But modified buffers are
 		never abandoned, so changes cannot get lost.
 
+							*:fc* *:fclose*
+:[count]fc[lose][!]
+		Close [count]th floating window by zindex order. '!' to close
+		all floating windows.
+
 ==============================================================================
 4. Moving cursor to other windows			*window-move-cursor*