update raxml-ng to 2.0.0 + UI refactor (#7829)

* update raxml-ng to 2.0.0 + UI refactor

* raxmlng: move macros to a separate file

* raxmlng: fix lint errors

* raxmlng: fix linter warnings

* raxmlng: trye to fix unit tests

* raxmlng: try to fix unit tests again

* raxmlng: use + instead of join() for string concatenation

* raxmlng: nofiles_filter

* raxmlng: add optional output: bestTreeCollapsed

* raxmlng: add a few more tests

* raxmlng: fix tests

* raxmlng: fix tests 2

* raxmlng: fix tests 3

* raxmlng: more tests

* raxmlng: fixed failed test

* raxmlng: add sequence number validator for the input MSA

* update raxml-ng website URL

* raxmlng: upgrade to v2.0.1

* raxmlng: dummy commit to enforce CI rerun

* raxmlng: bump galaxy version suffix

* rerun CI

Author: amkozlov