Issue deprecation notice for eclipsed legacy commands

src/main/bash/sdkman-default.sh

@@ -17,6 +17,7 @@
 #
 
 function __sdk_default() {
+	__sdkman_deprecation_notice "default"
 	local candidate version
 
 	candidate="$1"

src/main/bash/sdkman-help.sh

@@ -17,6 +17,7 @@
 #
 
 function __sdk_help() {
+	__sdkman_deprecation_notice "help"
 	__sdkman_echo_no_colour ""
 	__sdkman_echo_no_colour "Usage: sdk <command> [candidate] [version]"
 	__sdkman_echo_no_colour "       sdk offline <enable|disable>"

src/main/bash/sdkman-home.sh

@@ -17,6 +17,7 @@
 #
 
 function __sdk_home() {
+	__sdkman_deprecation_notice "home"
 	local candidate version
 
 	candidate="$1"

src/main/bash/sdkman-uninstall.sh

@@ -17,6 +17,7 @@
 #
 
 function __sdk_uninstall() {
+	__sdkman_deprecation_notice "uninstall"
 	local candidate version current
 
 	candidate="$1"

src/main/bash/sdkman-utils.sh

@@ -110,3 +110,18 @@ function __sdkman_echo_confirm() {
 		echo -e -n "\033[1;33m$1\033[0m"
 	fi
 }
+
+function __sdkman_deprecation_notice() {
+	local message="[Deprecation Notice]:
+This legacy '$1' command is replaced by a native implementation
+and it will be removed in a future release.
+Learn more at https://sdkman.io/native
+"
+
+	if [[ "$sdkman_colour_enable" == 'false' ]]; then
+		__sdkman_echo_no_colour "$message"
+	else
+		__sdkman_echo_yellow "$message"
+	fi
+}
+

src/main/bash/sdkman-version.sh

@@ -17,6 +17,7 @@
 #
 
 function __sdk_version() {
+	__sdkman_deprecation_notice "version"
     local version=$(cat $SDKMAN_DIR/var/version)
 	echo ""
 	__sdkman_echo_yellow "SDKMAN $version"