chore!: Add sliceofpointers custom linter

[gmlewis]

BREAKING CHANGE: ListOAuthApps now returns ([]*OAuthApp, error) instead of ([]OAuthApp, error).

This PR should help developers use a consistent style by not writing []*string or []T in their PRs.
It should also ease the maintenance burden by not having to repeat this over and over again.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.03%. Comparing base (27bd175) to head (15174df).
Report is 2 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@## master #3447 +/- ##
=======================================
Coverage 91.03% 91.03% =======================================
Files 179 179 Lines 15532 15532 =======================================
Hits 14139 14139 Misses 1221 1221 Partials 172 172 

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[gmlewis]

@stevehipwell - do you have time for a code review? Thank you!

[ldez]

I'm curious: what is the reasoning behind using slice of pointer of struct inside of slice of struct?

[gmlewis]

I'm curious: what is the reasoning behind using slice of pointer of struct inside of slice of struct?

• replace []Issue with []*Issue #180
• Why are all the responses using pointers #1429
• Policy on using pointers/values in structs for receiving data from GitHub servers. #537
• Using pointers all over the places? #79
• add Getter methods for data structures #45
• issue setting empty values #19

[gmlewis]

Thank you, @ldez!
Merging.