update project structure

- move agent to /agent
- change /beszel to /src
- update workflows and docker builds

.gitignore

@@ -8,15 +8,15 @@ beszel_data
 beszel_data*
 dist
 *.exe
-beszel/cmd/hub/hub
-beszel/cmd/agent/agent
+src/cmd/hub/hub
+src/cmd/agent/agent
 node_modules
-beszel/build
+build
 *timestamp*
 .swc
-beszel/site/src/locales/**/*.ts
+src/site/src/locales/**/*.ts
 *.bak
 __debug_*
-beszel/internal/agent/lhm/obj
-beszel/internal/agent/lhm/bin
+agent/lhm/obj
+agent/lhm/bin
 dockerfile_agent_dev