feat: move synthtool templates to library_generation/owlbot
#5158
| Job | Run time |
|---|---|
| 11m 46s | |
| 11m 47s | |
| 11m 10s | |
| 3m 30s | |
| 9m 15s | |
| 1m 30s | |
| 2m 0s | |
| 30s | |
| 5m 0s | |
| 5m 8s | |
| 3m 9s | |
| 9m 27s | |
| 4m 27s | |
| 1h 18m 39s |