stocks: rename everything to resources
stocks: rename everything to resources

For future changes which will add consumption rate control, we should rename
these functions to make it more coherent for its added function.

We also prefix stocks with their own label/keyword in order to be able to add
consume rate controls in a future addition.

Signed-off-by: Jacob Keller <74ec1f46a68d238888726a00aa611ba6343172e2@gmail.com>

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