add charter v1.0 in pdf and adoc formats

[anajsana]

• adoc file preview can be found here.
• pdf can be found here

Having an .adoc file that mirrors the PDF content is useful when the SC decides to create new versions of the charter and wishes to make changes and agree on these changes as a group

Action needed to merge:

• [x] At least one of the SC members take a look and {approve / request changes} the PR to have this unblocked and merge