This adds support for OpenPGP signatures containing provenance data.
Such information can be used to verify the integrity of a Chart by
testing that its file hash, metadata, and images are correct.
This first PR does not contain all of the tooling necessary for
end-to-end chart integrity. It contains just the library.
See #983
Fixed tests
Adding chart name linter
Add lint error
Moving to blocks
Moving to method
Moved lint rules to functions
Semantic version validation
Linting engine
Adding sources and home validations
Sharing file loading
Sharing file loading
Rolling back readme
Rewriting other linters
Fixing tests
Typo
Using chart.Metadata
Fixing format
Adding UNKNOWN in Engine
Adding tabs
Fixing tabs
This adds code to parse TOML files into Values maps. These can then
easily be passed into the template engine.
Included in this is support for TOML "tables", subsections of TOML
files. We will be using those to pass config data to dependent charts.