refactoring PEV shift strategy: simplify required methods, prohibit eff-gearshift when at max recuperation, prevent gearshift on drive-off (until target speed reached, em-speed above n_P80low, or operating point at full-load)

Merge in VECTO/vecto-dev from VECTO/mq_vecto-dev:bugfix/HybridStefanP to develop

* commit '38fb7706':
  update condition on selecting viable option in hybrid straegy
  don't look at shift lines if torque demand is too high

Merge in VECTO/vecto-dev from VECTO/mq_vecto-dev:feature/VECTO-1446-implement-two-voltage-levels-for-em to develop

* commit '77e6a76b':
  adding testcase and model for electric motor with 2 voltage levels
  modifying electric motor model: add different voltage levels
  fixes after rebase - make electric motor changes compile
  exclude vecto3 from archive
  update electric motor form to use two voltage levels, adapt input data, json reader, json writer for electric motor, adapt testcases to make it compile

update electric motor form to use two voltage levels, adapt input data, json reader, json writer for electric motor, adapt testcases to make it compile

Merge in VECTO/vecto-dev from VECTO/mq_vecto-dev:develop to develop

* commit 'bfe358fd':
  remove redundant else branches
  Revert "removed redundant ternary operands (boolean)"

This reverts commit fbf8bc83.

Pull request #64: Feature/VECTO-1440 change sourcecode from switch functions to switch pattern matching

Merge in VECTO/vecto-dev from VECTO/mk_vecto-dev:feature/VECTO-1440-change-sourcecode-from-switch-functions-to-switch-pattern-matching to develop

* commit 'd08c688d': (36 commits)
  corrected refactoring error (syntax)
  refactored null-checks to null-coalescing operator
  renamed constant "NOT_AVAILABLE" (typo)
  wrong string identifier in string.Format
  string interpolation
  string interpolation
  simplified conditions that are always true or false (+codeformatting)
  variables are always null
  code formatting
  removed condition which is always true
  removed unused code
  value is always null
  removed unneccessary imports
  removed redunant .ToString methods.
  inlined string literals and format specifier
  applied format-strings everywhere where they shortened the code and improved readability.
  removed redundant type specifier
  inlined out variables
  removed redundant "as" typecasts
  removed empty statements (redundant semicolons)
  ...

Merge remote-tracking branch 'origin/feature/VECTO-1440-change-sourcecode-from-switch-functions-to-switch-pattern-matching' into feature/VECTO-1440-change-sourcecode-from-switch-functions-to-switch-pattern-matching

# Conflicts:
#	VECTO/GUI/MainForm.vb