Add blurb to home page about audience and goal

[timcappalli]

Examples:

• https://standards.openbanking.org.uk/customer-experience-guidelines/latest/
• https://fidoalliance.org/design-system/

[MasterKale]

From Kevin during today's meeting:

====NEEDED=====

Orientate site visitors: define and state the audience

=====BRIEF=====

The audience for this work is … [ Insert here ]

The audience's needs include … [ Insert a list here ]

The business objective for the work is … [ Insert here. Can be more than one objective ]

We know we're successful if … [ Insert quantifiable metrics here ]

Thus, the single most important takeaway for our audience is … [ Insert quote from the audience here ]

The following examples are inspiring be https://standards.openbanking.org.uk/customer-experience-guidelines/latest/