Ability to pull in rules from remote repos

[armanrahman22]

Right now the code looks locally for the rules file, but we want to be able to source it from any public URL to allow for reuse of external rule sets

Acceptance Criteria:

• Implement ability to run the linter on a publicly accessible ruleset file by pointing to it in the cli arguments. e.g. woke -c https://raw.githubusercontent.com/get-woke/woke/main/example.yaml
• Review comments from maintainer on the PR
• Apply code changes (some of these might require changing to use git-go package, or make upstream changes to git-go package itself)
• Ensure PR is merged in source repo

[mkcomer]

When setting a custom config, I noticed:

if rule set contents is just "hello" --> we get error
FTL error="yaml: unmarshal errors:\n line 1: cannot unmarshal !!str hello into config.Config"
exit status 1

if rule set contents is "404: Not Found" --> no error, believes it is a valid yaml in general, but it is not a valid rule set yaml --> therefore doesn't add the custom rules and doesn't log this out.

Suggested enhancement:

1. Easier lift - add error handling to adding a rulesets - if it fails, tell us your yaml was an invalid rule set config and we didn't add your rules.
2. Larger lift - Add a schema validator for custom yaml file + add custom error handling while parsing yaml for contents.