Adding Grani_CredentialManager resource to handle Cred Manager by DSC

[guitarrapc]

Description

https://github.com/guitarrapc/GraniResource/issues/63

TODO

• [x] Create mof Template from Designer
• [x] Create Resource .psm1
• [x] Confirm simple test
• [x] Add Pester Test
• [x] Add DscConfigurationTest
• [x] Add Sample Configuration
• [x] Add ReadMe
• [x] Add Intellisence sample
• [x] Update Version to 3.7.7.0
• [x] Make Release Package
• [x] Publish to PowerShell Gellery

  Breaking Change

Previously versionInfo was X.x.x, 3.7.6. From this release it change to X.x.x.x, 3.7.7.0.

[guitarrapc]

All todo passed. Ready to merge