ROS 2 templates issues

[jhanca-robotecai]

When testing ROS 2 templates in #821 before 2409.2 point release, I found multiple issues that should be addressed at some point:

Fleet template

• Proteous lidar is set to Best Effort instead of Reliable, generating warnings when launching the navigation script
• multiple warnings
  <16:59:54> [Warning] (DecalTextureArray) - Material property: normal.textureMap does not have a valid asset Id
  <16:59:54> [Warning] (DecalTextureArray) - Missing decal texture maps for normal.textureMap. Please make sure all maps of this type are present.
• multiple warnings
  <16:54:58> [Warning] (System) - Can't get component (type: TransformComponent, addr: 0x793e6da4cd70) entity ID as it is not attached to an entity yet!
• multiple warnings
  <17:03:23> [Warning] (Prefabs) - Prefab - EntityIdMapper: Entity with Id [392129403702797755] has no registered owning instance
• playground level should/could be removed

Proteous

• problems with colliders occur when moving the robot with a keyboard

Project Template

• size of the ROSBot is incorrectly set in the nav config, making it move too close to obstacles (and often hit obstacles)
• game launcher does not start the default level
• the gem of the project should be either implemented or documented

Robotic Manipulation Template

• RoboticPalletization level should be removed as obsolete (alongside with the Automation Gem), or cleaned
• both levels are automatically modified after the first start (missing inertia values in triangular object)
• game launcher does not start the default level
• missing .gitignore file