lightning: remote_hsmd_socket & remove env files

- build vls and copy binary in final layer
- update configs
- add vls port, network, rust log and rpc url in env
- compose: set env variable in compose only
- dont separate env files, ease of access on env vars with compose
- common across networks set in dockerfile
Signed-off-by: Lakshya Singh <lakshay.singh1108@gmail.com>

assets/testnet-config

@@ -7,4 +7,5 @@ max-locktime-blocks=288
 important-plugin=/usr/bin/clboss
 clboss-auto-close=true
 bind-addr=0.0.0.0:19735
-plugin=/usr/local/src/plugins/summary/summary.py
+plugin=/usr/local/src/plugins/summary/summary.py
+subdaemon=hsmd:remote_hsmd_socket