Support generating multiple bug reports (#1776)

* try to implement a bug reporter dispatching bug instances

* extract interface to configure bug reporter during init phase

* chore: enhance exception handling

* feat: support independent output stream for XML reporter

* extract method to reuse for other kinds of reporter

* feat: support file path setting for other reporters

* resolve a warning reported by SQ

https://sonarcloud.io/project/issues?id=com.github.spotbugs.spotbugs&issues=AXzFIi_qkP_G57_BaZmZ&open=AXzFIi_qkP_G57_BaZmZ&pullRequest=1776

* test: add a test for BugReporterDispatcher

* bypass dispatcher if only one reporter is used

* docs: explain the change in the manual and the changelog

* docs: explain the change in the manual and the changelog

* test: add test cases to cover more changes

* chore: apply spotless

* test: add test cases to cover more changes

* test: set charcode to PrintStream

* test: add test cases to cover more changes

* test: stop provide a null to non-null arg

CHANGELOG.md

@@ -12,10 +12,14 @@ Currently the versioning policy of this project follows [Semantic Versioning v2.
 
 ### Added
 * Rule `DCN_NULLPOINTER_EXCEPTION` covers catching NullPointerExceptions in accordance with SEI Cert rule [ERR08-J](https://wiki.sei.cmu.edu/confluence/display/java/ERR08-J.+Do+not+catch+NullPointerException+or+any+of+its+ancestors) ([#1740](https://github.com/spotbugs/spotbugs/pull/1740))
+* Multiple types of report can be generated in batch. Set multiple commandline options for report configuration like `-html=report/spotbugs.html -xml:withMessages=report/spotbugs.xml`.
 
 ### Fixed
 * False negative about the rule ES_COMPARING_STRINGS_WITH_EQ ([#1764](https://github.com/spotbugs/spotbugs/issues/1764))
 
+### Deprecated
+* `-output` commandline option is deprecated. Use commandline options for report configuration like `-xml=spotbugs.xml` instead.
+
 ## 4.4.2 - 2021-10-08
 ### Changed
 - Add bug code to report in fancy-hist.xsl ([#1688](https://github.com/spotbugs/spotbugs/pull/1688))