scripts: add a helper for tagging releases

The tag-release.sh script creates an annotated tag containing
Klipper's current state.  Moonraker's update manager parses
this annotation to bind the available Klipper version to this
release of Moonraker.

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>

scripts/tag-release.sh

@@ -0,0 +1,71 @@
+#! /bin/bash
+# Helper Script for Tagging Moonraker Releases
+
+PRINT_ONLY="n"
+KLIPPER_PATH="$HOME/klipper"
+REMOTE=""
+DESCRIBE="describe --always --tags --long"
+
+# Get Tag and Klipper Path
+TAG=$1
+shift
+while :; do
+    case $1 in
+        -k|--klipper-path)
+            shift
+            KLIPPER_PATH=$1
+            ;;
+        -p|--print)
+            PRINT_ONLY="y"
+            ;;
+        *)
+            break
+    esac
+
+    shift
+done
+
+
+if [ ! -d "$KLIPPER_PATH/.git" ];  then
+    echo "Invalid Klipper Path: $KLIPPER_PATH"
+fi
+echo "Klipper found at $KLIPPER_PATH"
+GIT_CMD="git -C $KLIPPER_PATH"
+
+ALL_REMOTES="$( $GIT_CMD remote | tr '\n' ' ' | awk '{gsub(/^ +| +$/,"")} {print $0}' )"
+echo "Found Klipper Remotes: $ALL_REMOTES"
+for val in $ALL_REMOTES; do
+    REMOTE_URL="$( $GIT_CMD remote get-url $val | awk '{gsub(/^ +| +$/,"")} {print tolower($0)}' )"
+    match="$( echo $REMOTE_URL | grep -Ecm1 '(klipper3d|kevinoconnor)/klipper'|| true )"
+    if [ "$match" -eq 1  ]; then
+        echo "Found Remote $val"
+        REMOTE="$val"
+        break
+    fi
+done
+
+[ "$REMOTE" = "" ] && echo "Unable to find a valid remote" && exit 1
+
+$GIT_CMD fetch $REMOTE
+
+DESC="$( $GIT_CMD $DESCRIBE $REMOTE/master | awk '{gsub(/^ +| +$/,"")} {print $0}' )"
+HASH="$( $GIT_CMD rev-parse $REMOTE/master | awk '{gsub(/^ +| +$/,"")} {print $0}' )"
+
+if [ "$PRINT_ONLY" = "y" ]; then
+    echo "
+Tag: $TAG
+Repo: Klipper
+Branch: Master
+Version: $DESC
+Commit: $HASH
+"
+else
+    echo "Adding Tag $TAG"
+    git tag -a $TAG -m "Moonraker Version $TAG
+Klipper Tag Data
+repo: klipper
+branch: master
+version: $DESC
+commit: $HASH
+"
+fi