Print stack traces/add logging messages in several places

This will hopefully make it easier to track down various issues which
might otherwise go unnoticed or provide little information.

The main areas modified are those that external APIs may provide values
for or interact with: various providers and ILuaObject/IPeripheral
implementations. However, we do also log in a couple of other places
which indicate a problem with this, or another, mod.

src/main/java/dan200/computercraft/shared/computer/apis/CommandAPI.java

@@ -11,6 +11,7 @@ import dan200.computercraft.api.lua.ILuaContext;
 import dan200.computercraft.api.lua.ILuaTask;
 import dan200.computercraft.api.lua.LuaException;
 import dan200.computercraft.core.apis.ILuaAPI;
+import dan200.computercraft.core.logger.Logger;
 import dan200.computercraft.shared.computer.blocks.TileCommandComputer;
 import dan200.computercraft.shared.util.WorldUtil;
 import net.minecraft.block.Block;
@@ -98,6 +99,7 @@ public class CommandAPI implements ILuaAPI
             }
             catch( Throwable t )
             {
+                Logger.error( "Error running command.", t );
                 return new Object[]{ false, createOutput( "Java Exception Thrown: " + t.toString() ) };
             }
         }
@@ -208,6 +210,7 @@ public class CommandAPI implements ILuaAPI
                                 catch( Throwable t )
                                 {
                                     // Ignore buggy command
+                                    Logger.error( "Error running command.", t );
                                 }
                             }
                         }