Adding "optimization-passes" option (#216)

* ink::test attributes in new template

* add use ink

* adding optimization-passes option

* undoing unnecessary variable name change

* remove fork changes

* adding optimization_passes to tests

* cargo fmting

* switching to enum type

* Update src/main.rs

Co-authored-by: Michael Müller <mich@elmueller.net>

* Update src/main.rs

Co-authored-by: Michael Müller <mich@elmueller.net>

* Update src/main.rs

Co-authored-by: Michael Müller <mich@elmueller.net>

* Update src/main.rs

Co-authored-by: Michael Müller <mich@elmueller.net>

* Update src/main.rs

Co-authored-by: Michael Müller <mich@elmueller.net>

* adding cli help comment

* add line so default option is more visible

* Update src/cmd/build.rs

Co-authored-by: Michael Müller <mich@elmueller.net>