housekeeping: automated releases via release-it (via #4875)

* add `release-it`

* `swagger-ui-testing`

* add automated-release npm script

* tweak GIT_TAG behavior and test command

* disable Cypress video recording

* Revert "`swagger-ui-testing`"

This reverts commit c3de2ec70d10d1dc5d08513f940df0d036508b2c.

release/.release-it.json

@@ -0,0 +1,19 @@
+{
+  "safeBump": false,
+  "beforeChangelogCommand": "./release/check-for-breaking-changes.sh ${latestVersion} ${version}",
+  "changelogCommand": "./release/get-changelog.sh",
+  "buildCommand": "npm run build",
+  "increment": "conventional:angular",
+  "src": {
+    "commitMessage": "release: v%s",
+    "tagName": "v%s",
+    "push": false,
+    "beforeStartCommand": "npm run test",
+    "afterReleaseCommand": "export GIT_TAG=v${version} && echo GIT_TAG=v${version} > release/.version"
+  },
+  "github": {
+    "release": true,
+    "releaseName": "Swagger UI v%s Released!",
+    "draft": true
+  }
+}

release/check-for-breaking-changes.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+CURRENT_VERSION=$1
+NEXT_VERSION=$2
+CURRENT_MAJOR=${CURRENT_VERSION:0:1}
+NEXT_MAJOR=${NEXT_VERSION:0:1}
+
+if [ "$CURRENT_MAJOR" -ne "$NEXT_MAJOR" ] ; 
+  then if [ "$BREAKING_OKAY" = "true" ];
+    then echo "breaking change detected but BREAKING_OKAY is set; continuing." && exit 0;
+    else echo "breaking change detected and BREAKING_OKAY is not set; aborting." && exit 1;
+  fi;
+fi;
+
+echo "next version is not a breaking change; continuing."; 

release/get-changelog.sh

@@ -0,0 +1,4 @@
+echo '**Interface changes**: ???'
+echo ''
+echo '**Changelog**:'
+./node_modules/.bin/conventional-changelog -p angular | tail -n +3