GENERATORS: File renaming

Being in their own directory, prefixing files was useless.
Now all the files have the same name as the class they contain.

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
TESTS: File renaming

Being in their own directory, prefixing tests files was useless.

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
VCO: Include update due to last renaming

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
FILTERS: Added new arborescence for filters

Signed-off-by: Gama <misept.dieseneuf@gmail.com>