Inconsistent capitalization of input params

[gsgall]

Issue

Some objects require inputs where the first letter is capital and others do not. This should be consistent or a convection for capitalization vs non-capitalization should be established for input parameters.

Ex. test/tests/DrifDiffusionAction/RF_Plasma_actions.i

[DriftDiffusionAction]
  [Plasma]
    electrons = em
    charged_particle = Ar+
    Neutrals = Ar*
    mean_energy = mean_en
    potential = potential
    Is_potential_unique = true
    using_offset = false
    position_units = ${dom0Scale}
    Additional_Outputs = 'ElectronTemperature Current EField'
  []
[]

Objects with issues

• DriftDiffusionAction
• PeriodicControllers
• DensityNormalization
• TM0CylindricalErAux
• TM0CylindricalEzAux
• CircuitDirchletPotential
• DriftDiffusionDoNothingBC
• MatchedValueLogBC
• SakiyamaEnergySecondaryElectronBC
• ArbitraryTiedValueConstraint
• DriftDiffusion
• ElectronsFromIonization
• TM0CylindricalEr
• TM0CylindricalEz
• SideCurrent

Proposed Solution

Add deprecation warnings to all of the parameters that have this inconsistency and remove the inconsistent versions of input params after some time.