update plugins for ARM Mac

[Edouard2laire]

This PR updates the plugins for the ARM Mac:

• iso2mesh to 1.9.8
  A new version of iso2mesh was released last week by @fangq notably adding the support for arm computer.
  The details of the changes can be seen here: https://github.com/fangq/iso2mesh/releases/tag/v1.9.8
  This updates the plugin version of iso2mesh to this new release.

• xdf to master.
  xdf is now working on ARM Mac. (see Recompile for Mac with arm processor xdf-modules/xdf-Matlab#20)

• Improve the support of conflict between plugins

We are very close to having all the plugins working for Mac with only Duneuro not being compatible.

[Edouard2laire]

@rcassani, both iso2mesh contains a copy of jsnirfy. Is there a way to ensure that loadjsnirf.m, savejsnirf.m are coming from jsnirfy when loading snirf file?

Both files are the same now so there is no issue, but it might create issues in the future if they diverge

[rcassani]

This could addressed in two ways:

1. Not allow iso2mesh to be loaded when jsnirfy is being loaded.
   Done by adding iso2mesh in the field UnloadPlugs for jsnirfy

2. Removing the copy of jsnirfy from iso2mesh when this second is installed.
   We can add the plugin jsnirfy as dependency for iso2mesh, but this will cause troubles if they start to differ.

[Edouard2laire]

This could addressed in two ways:

1. Not allow iso2mesh to be loaded when jsnirfy is being loaded.
   Done by adding iso2mesh in the field UnloadPlugs for jsnirfy

This was not working as jsnirfy was considered loaded when iso2mesh was. i think this is because the incompatible dependency were not unloaded before to try to laod a plugin:

bst_plugin('Load', 'iso2mesh');
bst_plugin('Load', 'jsnirfy');

would produce

BST> Adding plugin iso2mesh to path: /Users/edelaire1/.brainstorm/plugins/iso2mesh/iso2mesh-1.9.8
BST> Executing callback LoadedFcn: assignin('base', 'ISO2MESH_TEMP', bst_get('BrainstormTmpDir'));
BST> Plugin jsnirfy already loaded: /Users/edelaire1/.brainstorm/plugins/iso2mesh/iso2mesh-1.9.8

with the changes it now produces:

BST> Adding plugin iso2mesh to path: /Users/edelaire1/.brainstorm/plugins/iso2mesh/iso2mesh-1.9.8
BST> Executing callback LoadedFcn: assignin('base', 'ISO2MESH_TEMP', bst_get('BrainstormTmpDir'));
BST> Removing plugin iso2mesh from path: /Users/edelaire1/.brainstorm/plugins/iso2mesh/iso2mesh-1.9.8
BST> Plugin easyh5 already loaded: /Users/edelaire1/.brainstorm/plugins/easyh5
BST> Adding plugin jsnirfy to path: /Users/edelaire1/.brainstorm/plugins/jsnirfy/jsnirfy-master
BST> Adding plugin jsnirfy to path: /Users/edelaire1/.brainstorm/plugins/jsnirfy/jsnirfy-master/*

[Edouard2laire]

Note: I opened a PR to have xdf available on arm here: xdf-modules/xdf-Matlab#20 (NDLR: now merged)
Once this is merged there will only be duneneuro left not working on Mac with arm processors.

So maybe we should remove the warning at startup: https://github.com/brainstorm-tools/brainstorm3/blob/master/toolbox/core/bst_startup.m#L160-L164