Add realease notes for keyboard from live system

docs/release-notes/keyboard_from_live.rst

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+:Type: Live Environment
+:Summary: Use keyboard layout configuration from the Live system
+
+:Description:
+    Until now Anaconda, it was required to specify keyboard layout for the Live environment.
+    With this change, live system itself is responsible for the keyboard configuration and
+    Anaconda just reading the configuration from the live system for the installed system.
+
+    This works only if it is not specified by user and only Gnome Shell environment is
+    supported so far. Spins should be added later.
+
+    This is proper fix for https://bugzilla.redhat.com/show_bug.cgi?id=2016613 where we found
+    that Wayland don't allow Anaconda to control keyboard configuration. The original fix
+    separated installation and current environment which is wrong because user can type
+    passwords with other keyboard layout than what will be installed. This solution will leave
+    the control on the system itself and just reads the configuration.
+    It is also a big step to resolve https://bugzilla.redhat.com/show_bug.cgi?id=1955025 .
+
+:Links:
+    - https://github.com/rhinstaller/anaconda/pull/4976
+    - https://bugzilla.redhat.com/show_bug.cgi?id=2016613
+    - https://bugzilla.redhat.com/show_bug.cgi?id=1955025