fix: reduce string comparisons in ADC decoding, cleanup

[baltzell]

Note, this assumes unique crate/slot/channel in all /daq/fadc CCDB tables. Now, the first match wins. Previously the last match won. For run 5038, the RF/LTCC::adc banks have a resulting difference, which will be addressed by fixing CCDB tables to be unique.

Note, this was a component of #1051.

[baltzell]

Summary of hipo-diff on gold runs for PRs #1064, #1065, and #1066:

Run Period     , Gold Run , Redecoderingdiff
rga_spring2018 , 4013     , RF/LTCC::adc
rga_fall2018   , 5038     , RF/LTCC::adc
rgk_2018       , 5700     , RF/LTCC::adc
rgb_spring2019 , 6302     , RF/BAND/LTCC::adc
rga_spring2019 , 6666     , RF/LTCC::adc
rgb_fall2019   , 11567    , RF/LTCC::adc
rgf_2020       , 12933    , RF/LTCC::adc (and HEL::scaler errors, unreleated(?))
rgm_2021       , 15833    , RF/BAND::adc
rgc_spring2022 , 16600    , RF/LTCC::adc
rgc_fall2022   , 17407    , RF/LTCC::adc (and HEL::scaler errors, unrelated(?))
rgc_spring2023 , 17800    , RF/LTCC::adc and RAW::tdc
rgd_2023       , 18779    , BAND/RF/LTCC::adc
rgk_2024       , 19877    , BAND/RF/LTCC::adc
rge_2024       , 20522    , BAND/RF/LTCC::adc and RAW::tdc
rgl_2025       , 23050    , RF/BAND::adc