Major UT Overhaul (#16544)

* Removes old UT definition files (drone/travis)
* Adds concurrency definitions to the workflows
* Changes our workflows to be more in line with what /tg does
* Adds a workflow to build/commit TGUI
* Adds a workflow to build/commit changelogs

Add python version to dependencies.sh
Fix dme errors
Removes a bunch of not included files
Cache Opendream and add directory to check_grep.py

Co-authored-by: Werner <Arrow768@users.noreply.github.com>

tools/bootstrap/node

@@ -8,10 +8,6 @@
 # Otherwise, this script requires a system `node` to be provided.
 set -e
 
-#Define Version
-NODE_VERSION=14
-NODE_VERSION_PRECISE=14.16.1
-
 # Convenience variables
 Bootstrap="$(dirname "$0")"
 Cache="$Bootstrap/.cache"
@@ -20,6 +16,7 @@ if [ "$TG_BOOTSTRAP_CACHE" ]; then
 fi
 OldPWD="$PWD"
 cd "$Bootstrap/../.."
+. ./dependencies.sh  # sets NODE_VERSION_PRECISE
 cd "$OldPWD"
 NodeVersion="$NODE_VERSION_PRECISE"
 NodeFullVersion="node-v$NodeVersion-win-x64"