Issue #11725: Automate twitter posts to use single shell command

.ci/tweet-releasenotes.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+set -e
+
+source ./.ci/util.sh
+
+checkForVariable() {
+  VAR_NAME=$1
+  if [ -v "${!VAR_NAME}" ]; then
+    echo "Error: Define $1 environment variable"
+    exit 1
+  fi
+}
+
+checkForVariable "TWITTER_CONSUMER_KEY"
+checkForVariable "TWITTER_CONSUMER_SECRET"
+checkForVariable "TWITTER_ACCESS_TOKEN"
+checkForVariable "TWITTER_ACCESS_TOKEN_SECRET"
+checkForVariable "CS_RELEASE_VERSION"
+
+checkout_from https://github.com/checkstyle/contribution
+
+cd .ci-temp/contribution/releasenotes-builder
+mvn -e --no-transfer-progress clean compile package
+cd ../../../
+
+if [ -d .ci-temp/checkstyle ]; then
+  cd .ci-temp/checkstyle/
+  git reset --hard origin/master
+  git pull origin master
+  git fetch --tags
+  cd ../../
+else
+  cd .ci-temp/
+  git clone https://github.com/checkstyle/checkstyle
+  cd ../
+fi
+
+CS_RELEASE_VERSION="$(getCheckstylePomVersion)"
+echo CS_RELEASE_VERSION="$CS_RELEASE_VERSION"
+
+cd .ci-temp/checkstyle
+LATEST_RELEASE_TAG=$(curl -s https://api.github.com/repos/checkstyle/checkstyle/releases/latest \
+                       | jq ".tag_name")
+echo LATEST_RELEASE_TAG="$LATEST_RELEASE_TAG"
+
+cd ../
+BUILDER_RESOURCE_DIR="contribution/releasenotes-builder/src/main/resources/com/github/checkstyle"
+
+java -jar contribution/releasenotes-builder/target/releasenotes-builder-1.0-all.jar \
+     -remoteRepoPath checkstyle/checkstyle \
+     -localRepoPath checkstyle \
+     -startRef "$LATEST_RELEASE_TAG" \
+     -releaseNumber "$CS_RELEASE_VERSION" \
+     -githubAuthToken "$READ_ONLY_TOKEN" \
+     -twitterTemplate $BUILDER_RESOURCE_DIR/templates/twitter.template \
+     -generateTwit \
+     -twitterConsumerKey "$TWITTER_CONSUMER_KEY" \
+     -twitterConsumerSecret "$TWITTER_CONSUMER_SECRET" \
+     -twitterAccessToken "$TWITTER_ACCESS_TOKEN" \
+     -twitterAccessTokenSecret "$TWITTER_ACCESS_TOKEN_SECRET" \
+     -publishTwit