review usage of explicit H1 in the components

[droshev]

Describe the bug
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there are a number of locations in our components where fiori fundamentals hard codes <h1>. for Accessibility (A11y) purposes, these must be configurable. Additionally, they should probably provide H3 as default, and probably should not provide H1 as a option (any page should only have a single h1)

Is this issue related to a specific component?

What version of the Fiori Fundamentals are you using?

What offering/product do you work on? Any pressing ship or release dates we should be aware of?

What front-end framework are you implementing in, e.g., Angular, React, etc.?

To Reproduce
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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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[jbadan]

Looks like this is a copy of #1178 --- currently in progress :)

[jbadan]

fixed by #1367