Add the missing console input stream delegate

[opeongo]

The console delegate methods in Interpreter were missing a method to change the input stream. This PR adds the missing method.

[codecov[bot]]

Codecov Report

Attention: 656 lines in your changes are missing coverage. Please review.

Comparison is base (b1998b1) 74.24% compared to head (455980d) 74.24%. Report is 1026 commits behind head on master.

Files	Patch %	Lines
src/main/java/bsh/Interpreter.java	85.03%	51 Missing and 21 partials :warning:
src/main/java/bsh/BshClassManager.java	65.73%	48 Missing and 13 partials :warning:
src/main/java/bsh/NameSpace.java	87.87%	40 Missing and 17 partials :warning:
src/main/java/bsh/ClassGeneratorUtil.java	89.59%	35 Missing and 14 partials :warning:
src/main/java/bsh/BshMethod.java	76.73%	26 Missing and 21 partials :warning:
src/main/java/bsh/Name.java	86.76%	20 Missing and 23 partials :warning:
src/main/java/bsh/LHS.java	74.35%	28 Missing and 12 partials :warning:
src/main/java/bsh/Invocable.java	83.03%	23 Missing and 15 partials :warning:
src/main/java/bsh/DelayedEvalBshMethod.java	61.97%	26 Missing and 1 partial :warning:
src/main/java/bsh/BSHPrimarySuffix.java	84.41%	17 Missing and 7 partials :warning:
... and 30 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #742 +/- ## ========================================= Coverage 74.24% 74.24% - Complexity 3041 3043 +2 ========================================= Files 108 108 Lines 9354 9358 +4 Branches 1857 1857 ========================================= + Hits 6945 6948 +3 Misses 2070 2070 - Partials 339 340 +1 ``` | [Flag](https://app.codecov.io/gh/beanshell/beanshell/pull/742/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=beanshell) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/beanshell/beanshell/pull/742/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=beanshell) | `74.24% <87.44%> (+<0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=beanshell#carryforward-flags-in-the-pull-request-comment) to find out more.

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[opeongo]

This PR seems to have been mangled by the forced-push that was done last month. Does it need to deleted and pushed again?

[nickl-]

This PR seems to have been mangled by the forced-push that was done last month. Does it need to deleted and pushed again?

Something is funny with the code coverage too, would you mind terribly to redo the PR please?

[nickl-]

Not sure why the build failed for Java 11. Looks straight forward enough.

Lets see what happens when we merge.

[nickl-]

Build succeeded \o/