Support policy for OData libraries

[habbes]

Add support policy document.

[learn-build-service-prod[bot]]

Learn Build status updates of commit ce5652e:

:white_check_mark: Validation status: passed

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Odata-docs/support/support-policy.md	:white_check_mark:Succeeded	View
Odata-docs/TOC.yml	:white_check_mark:Succeeded	View

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[learn-build-service-prod[bot]]

Learn Build status updates of commit 93216bd:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
Odata-docs/support/support-policy.md	:white_check_mark:Succeeded	View
Odata-docs/TOC.yml	:white_check_mark:Succeeded	View

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod[bot]]

Learn Build status updates of commit 03e51c8:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
Odata-docs/support/support-policy.md	:white_check_mark:Succeeded	View
Odata-docs/TOC.yml	:white_check_mark:Succeeded	View

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[habbes]

Support policy already merged with ODL 8 release notes PR.