Add AsciiDoc brand guidelines

Also modified the Eclipse IoT brand guideline's file name to conform with
the file naming convention.

Created a guidelines directory to store the PDFs in.

Squashed commit of the following:

commit fc9a00822949ebb4f90c09f625f60368b4f9b51b
Author: Olivier Goulet <olivier.goulet@eclipse-foundation.org>
Date:   Thu Jul 21 11:29:51 2022 -0400

    Add AsciiDoc brand guidelines

    Change-Id: I214e865b3e1d74228455bd03cb2911f33f3811cf

commit 3a53687bc88397a27a2625d72e8935b006362f34
Merge: 48f47db0 227f8c48
Author: Olivier Goulet <olivier.goulet@eclipse-foundation.org>
Date:   Thu Jul 21 09:44:31 2022 -0400

    Merge branch 'master' of ssh://git.eclipse.org:29418/www.eclipse.org/org

    Change-Id: Id6e128466ea23b6247741c203ecb5dadf4595ab6

commit 48f47db018e7151974b47be18e5e6b6e0c5727cf
Merge: 686667d6 17c445f4
Author: Olivier Goulet <olivier.goulet@eclipse-foundation.org>
Date:   Mon Jul 18 12:51:34 2022 -0400

    Merge branch 'master' of ssh://git.eclipse.org:29418/www.eclipse.org/org

    Change-Id: I3b6dc5eb19cb762d9e7896bd838b696d61b9ae0f

commit 686667d6c7bc3e5b973ab3cb1c4276f20312ea39
Author: Olivier Goulet <olivier.goulet@eclipse-foundation.org>
Date:   Mon Jul 18 09:31:07 2022 -0400

    Update Matt's title to IT Manager

commit 384f7f23bb07d8efc4ec192b3b5d0a92d24069eb
Author: Olivier Goulet <olivier.goulet@eclipse-foundation.org>
Date:   Thu Jul 14 20:34:42 2022 -0400

    Remove Zhou from staff page

Change-Id: I1eebae9e404e69dcc2fd02944a79e972ee9a4f61
3 files changed