[refactor] streaming swaps tweaks #check-lint-warning

this PR makes a few small modifications. Best to review this PR commit by commit

• rename mimirs
• rename frequency --> interval
• additional attributes to quotes endpoint
• native<>native streaming swaps can occur for 1 year (instead of 24hrs)
• algo change to the calculation of the virtual pool between two pools of a streaming swap. This one keeps a basis points fee more accurately
• change "MinBP" mimir to specify the target swap fee in basis points instead of swap size
• added regression tests for streaming swap quotes endpoint, fixed found bugs