Search method syntax is not consistent with benchmarks syntax in configuration file

[wigging]

The search methods are defined as tables in the configuration file as:

[search.method.random]
package = "deephyper.hpo"
name = "RandomSearch"

[search.method.cbo_093]
package = "deephyper.hpo"
name = "CBO"
kwargs.acq_optimizer = "ga"

[search.method.cbo]
package = "deephyper.hpo"
name = "CBO"
kwargs.acq_optimizer = "ga"

But the benchmarks in the configuration file are defined as an array of tables as shown below:

[[benchmark]]
name = "Griewank"
nparams = 5
offset = -4
nslack = 0

[[benchmark]]
name = "Hartmann6D"

[[benchmark]]
name = "Levy"
nparams = 5

To be consistent, a similar approach should be used for the search method too. A possible solution could be:

[[search_method]]
name = "RandomSearch"
package = "deephyper.hpo"

[[search_method]]
name = "CBO93"
package = "deephyper.hpo"
kwargs.acq_optimizer = "ga"

[[search_method]]
name = "CBO"
package = "deephyper.hpo"
kwargs.acq_optimizer = "ga"

[Deathn0t]

Something that is useful is to make the difference between the label of some experiments and the name of the Search sub-class used. For example CBO93 is the label corresponding to CBO class with deephyper version 0.9.3. Similarly different kwargs of the same Search can be compared.