Adds SQL to travis. Other travis optimizations (#38325)

* Adds SQL to travis

* See if we can get this working

* :dab:

* Try dis

* wew

* Try this?

* Should do it

* DL the biatch

* oof

* bruh

* json in 10.2

* Fix schemas

* Actually separate tools and byond builds

* Dedent the ting

* Needs more include

* Fix script logic

* Caching and fixups

* Jesus neer

* Fix this

* And this

* Fix things

* Oh that's why she did it here

* Fuck a duck

* yadayadayada

* Cache cargo in the right build

* Idiot.commit

* *sighs*

* Tools build doesn't need BYOND cache

* Create a database with the prefixed schema as well

* Fix prefixed trigger names

tools/travis/before_build_byond.sh

@@ -6,7 +6,7 @@ if [ "$BUILD_TOOLS" = true ]; then
   exit 0
 fi;
 echo "Combining maps for building"
-if [ "$DM_MAPFILE" = "loadallmaps" ]; then
+if [ $BUILD_TESTING = true ]; then
     python tools/travis/template_dm_generator.py
 fi;