The $@ option in bash doesn't make sense to come before `generate`
because the only option we can pass before generate cli usage is `help`.
System properties can be passed via JAVA_OPTS, so there's not really a
need for any intermediaries in the command line construction.
Having $@ at the end of the arguments list allows maintainers and users
inspecting options to quickly pass new options to a script. For example,
```
./bin/aspnetcore-petstore.sh --additional-properties sourceFolder=asdf
```
For command line arguments that may appear more than once in the
arguments list, this change doesn't provide any rules about overwriting
values that may exist (hard-coded) in the script. That is, in the
example above, if aspnetcore-petstore.sh already includes the
sourceFolder set to a different value, the "winning" value is up to the
options parser and openapi-generator-cli implementation.
Fixed typo in shell script
Added support for Outer Enums, inner enums not supported.
Added missing UUID library in ecf template.
Improved Model inheritance.
Added shell scripts, batch files to generate Eiffel Petstore samples.
Added Setup CI (travis, shippable, etc) to cover the Eiffel Petstore samples.
Refactored part of the code into an Abstract Eiffel base class,
which can be later used in Eiffel server stub generators.
Added Eiffel Style guide to the contribution guidelines so that Eiffel contributors know what to follow in terms of code style
Fixed code generator issues.
Updated mustaches templates.
