Add workflow to publish to NuGet and updated version to be 1.0.0

[niravmsoni]

@ardalis - Following up with this PR I've revised the version to be 1.0.0 since this is the first time the template is getting released on NuGet. Please feel free to suggest/edit if you have any other version number in your mind

Reference issue

[github-actions[bot]]

Package	Line Rate	Branch Rate	Complexity	Health
CleanArchitecture.Core	35%	25%	18	❌
CleanArchitecture.Infrastructure	2%	0%	26	❌
Summary	11% (23 / 217)	17% (1 / 6)	44	❌