Created TODO file for the reem_teleop stack

Author: Adolfo Rodriguez Tsouroukdissian

TODO

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+- Reduce bandwidth of /tf topic: Do not broadcast intermediate frames.
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+- Reduce log statements, make better use of severity levels.
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+- Use a KDL subtree with only relevant joints/links, and not the whole robot tree.
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+- Allow more general endpoint specification (Investigate possible use of iTaSC for this point and the above).
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+- Move away from service-based IK calls to a plugin-based one.
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+- Simplify configuration files.
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+- Make stack robot-agnostic (and remove reem_ prefix from name).
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+- Document public API.
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+- Add proper unit test suite.
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+- Create branches specific to each supported ros release.