[Code formatting: Change indentation style to space](https://github.com/clicon/clixon/issues/379)

* Applies to all c/h/y/l/sh files and .editorconfig

test/test_minmax.sh

@@ -106,12 +106,12 @@ module $APPNAME{
       }
       container b2c {
         leaf-list b2ll{
- 	  min-elements 1;
-	  type string;
+          min-elements 1;
+          type string;
         }
       }
       leaf-list b3ll{
-	  type string;
+          type string;
       }
     }
   }
@@ -124,7 +124,7 @@ if [ $BE -ne 0 ]; then
     new "kill old backend"
     sudo clixon_backend -zf $cfg
     if [ $? -ne 0 ]; then
-	err
+        err
     fi
     new "start backend -s init -f $cfg"
     # start new backend
@@ -295,7 +295,7 @@ if [ $BE -ne 0 ]; then
     # Check if premature kill
     pid=$(pgrep -u root -f clixon_backend)
     if [ -z "$pid" ]; then
-	err "backend already dead"
+        err "backend already dead"
     fi
     # kill backend
     stop_backend -f $cfg