[fix] backwards compatible env

As per https://docs.coopcloud.tech/maintainers/upgrade/#backwards-compatible-environment-variable-changes

moved the defaults for the new mumble-server.ini variables
 from .env.sample to the compose file

.env.sample

@@ -25,42 +25,42 @@ SECRET_SUPERUSER_PASSWORD_VERSION=v1
 #################
 # MUMBLE CONFIG #
 #################
-# Documentation for the following options is here:
+# Documentation for the following options can be found here:
 # https://github.com/mumble-voip/mumble/blob/v1.6.870/auxiliary_files/mumble-server.ini
-WELCOME_TEXT="<br />Welcome to this server running <b>Mumble</b>.<br />Enjoy your stay!<br />"
-BANDWIDTH=558000
-TIMEOUT=30
-USERS=100
-USERS_PER_CHANNEL=0
-MESSAGE_BURST=5
-MESSAGE_LIMIT=1
-PLUGIN_MESSAGE_LIMIT=1
-PLUGIN_MESSAGE_BURST=5
-ALLOW_PING=true
-OPUS_THRESHOLD=0
-CHANNEL_NESTING_LIMIT=10
-CHANNEL_COUNT_LIMIT=1000
-CHANNEL_NAME=[ \\-=\\w#\\[\\]\\{\\}\\(\\)\\@\\|]+
-USERNAME=[-=\\w\\[\\]\\{\\}\\(\\)\\@\\|\\.]+
-DEFAULT_CHANNEL=0
-REMEMBER_CHANNEL=true
-REMEMBER_CHANNEL_DURATION=0
-TEXT_MESSAGE_LENGTH=5000
-IMAGE_MESSAGE_LENGTH=1048576
-ALLOW_HTML=true
-BONJOUR=true
-OBFUSCATE=false
-CERT_REQUIRED=false
-SEND_VERSION=true
-SUGGEST_VERSION=
-SUGGEST_POSITIONAL=
-SUGGEST_PUSH_TO_TALK=
-KDF_ITERATIONS=-1
-AUTO_BAN_ATTEMPTS=10
-AUTO_BAN_TIMEFRAME=120
-AUTO_BAN_TIME=300
-AUTO_BAN_SUCCESSFUL_CONNECTIONS=true
-ALLOW_RECORDING=true
-ROLLING_STATS_WINDOW=300
-LISTENERS_PER_CHANNEL=5
-LISTENERS_PER_USER=2
+#WELCOME_TEXT="<br />Welcome to this server running <b>Mumble</b>.<br />Enjoy your stay!<br />"
+#BANDWIDTH=558000
+#TIMEOUT=30
+#USERS=100
+#USERS_PER_CHANNEL=0
+#MESSAGE_BURST=5
+#MESSAGE_LIMIT=1
+#PLUGIN_MESSAGE_LIMIT=1
+#PLUGIN_MESSAGE_BURST=5
+#ALLOW_PING=true
+#OPUS_THRESHOLD=0
+#CHANNEL_NESTING_LIMIT=10
+#CHANNEL_COUNT_LIMIT=1000
+#CHANNEL_NAME=[ \\-=\\w#\\[\\]\\{\\}\\(\\)\\@\\|]+
+#USERNAME=[-=\\w\\[\\]\\{\\}\\(\\)\\@\\|\\.]+
+#DEFAULT_CHANNEL=0
+#REMEMBER_CHANNEL=true
+#REMEMBER_CHANNEL_DURATION=0
+#TEXT_MESSAGE_LENGTH=5000
+#IMAGE_MESSAGE_LENGTH=1048576
+#ALLOW_HTML=true
+#BONJOUR=true
+#OBFUSCATE=false
+#CERT_REQUIRED=false
+#SEND_VERSION=true
+#SUGGEST_VERSION=
+#SUGGEST_POSITIONAL=
+#SUGGEST_PUSH_TO_TALK=
+#KDF_ITERATIONS=-1
+#AUTO_BAN_ATTEMPTS=10
+#AUTO_BAN_TIMEFRAME=120
+#AUTO_BAN_TIME=300
+#AUTO_BAN_SUCCESSFUL_CONNECTIONS=true
+#ALLOW_RECORDING=true
+#ROLLING_STATS_WINDOW=300
+#LISTENERS_PER_CHANNEL=5
+#LISTENERS_PER_USER=2