Change of speed test.

- add template parameter of fixture class
- create separate method for test of fields
- add speed test of Field::value_list method
Optimization of speed test.

- add test for vector and fixed vector values of fields
- add general method for run test loops
- add methods for set data and test results of tests
Add new speed tests.

- add unit tests of FieldFormula, FieldPython and FielElementwise