Add support for PaSiMap analysis in JalviewJS

PaSiMap relies on some java ops not yet supported in java2script:
e.g. in jalview.analysis.ccAnalysis:

double newH = Arrays.stream(MiscMath.elementwiseMultiply(hValues, eigenMatrix.getRow(hIndex))).sum() / Arrays.stream(MiscMath.elementwiseMultiply(hValues, hValues)).sum();
hValues[hIndex] = newH;

this involves spliterators - which result in:
ERROR: Error computing cc_analysis: TypeError: this.$finals$.accumulator.accept$O$D is not a function
at Object.eval [as accept$D] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/stream/ReduceOps.js:616:27)
at Object.eval (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/Spliterators.js:592:8)
at Object.eval [as forEachRemaining$java_util_function_Consumer] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/Spliterator.js:162:6)
at clazz.eval [as copyInto$java_util_stream_Sink$java_util_Spliterator] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/stream/AbstractPipeline.js:205:13)
at clazz.eval [as wrapAndCopyInto$java_util_stream_Sink$java_util_Spliterator] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/stream/AbstractPipeline.js:197:6)
at Object.eval [as evaluateSequential$java_util_stream_PipelineHelper$java_util_Spliterator] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/stream/ReduceOps.js:673:15)
at clazz.eval [as evaluate$java_util_stream_TerminalOp] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/stream/AbstractPipeline.js:50:195)
at clazz.eval [as collect$java_util_function_Supplier$java_util_function_ObjDoubleConsumer$java_util_function_BiConsumer] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/stream/DoublePipeline.js:565:13)
at clazz.eval [as sum$] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/java/util/stream/DoublePipeline.js:381:20)
at Object.eval [as run$] (https://www.jalview.org/jalview-js/test-release/swingjs/j2s/jalview/analysis/ccAnalysis.js:111:106)