[Dev] Naming convention for types

[ocots]

Review the naming convention of types:

# CTBase.Exceptions
CTException
IncorrectArgument
PreconditionError
NotImplemented
ParsingError
AmbiguousDescription
ExtensionError

# CTDirect
AbstractOptimalControlDiscretizer
Collocation

# CTModels
AbstractOptimalControlInitialGuess
OptimalControlInitialGuess
AbstractModel
AbstractOptimalControlProblem # alias
Model
AbstractSolution
AbstractOptimalControlSolution # alias
Solution

# CTSolvers
DiscretizedOptimalControlProblem
AbstractOptimizationModeler
ADNLPModeler
ExaModeler
AbstractOptimizationSolver
IpoptSolver
MadNLPSolver
MadNCLSolver
KnitroSolver
AbstractStrategy
StrategyRegistry
StrategyMetadata
StrategyOptions
OptionDefinition
RoutedOption

Rule: no duplication of the module / package name.

[jbcaillau]

Review the naming convention of types:

# CTBase.Exceptions
CTException
IncorrectArgument
PreconditionError
NotImplemented
ParsingError
AmbiguousDescription
ExtensionError

# CTDirect
AbstractOptimalControlDiscretizer -> AbstractDiscretizer
Collocation

# CTModels
AbstractOptimalControlInitialGuess -> AbstractInitialGuess
OptimalControlInitialGuess -> InitialGuess
AbstractModel
AbstractOptimalControlProblem -> remove
Model
AbstractSolution
AbstractOptimalControlSolution -> remove
Solution

# CTSolvers
DiscretizedOptimalControlProblem -> DiscretizedModel
AbstractOptimizationModeler -> AbstractNLPModeler
ADNLPModeler -> ADNLP
ExaModeler -> Exa
AbstractOptimizationSolver -> AbstractNLPSolver
IpoptSolver -> Ipopt
MadNLPSolver -> MadNLP
MadNCLSolver -> MadNCL
KnitroSolver -> Knitro
AbstractStrategy
StrategyRegistry 
StrategyMetadata
StrategyOptions
OptionDefinition
RoutedOption

[ocots]

In OptimalControl, do not reexport types. Only import them to have them qualifying.