Create and add coding standards to the Contributor's Guide

[jprestop]

This is a sub-issue of #2360 (Add content to the Contributor's Guide).

Describe the Sub-Issue

A Contributor's Guide outline was created with the Create outline for a MET Contributor's Guide #1774 issue. We must still create and add coding standards to the MET Contributor's Guide per METplus-Internal Issue 26.

Research whether CLion or some other IDE can automate this process for us.

Two potential requirements:

• Consider only choosing a standard for which we can use an IDE to automate this process.
• Only chose a standard for which there is an automated way (GitHub Actions) of checking for compliance.

Time Estimate

Up to two months of one or more engineer's time

Define the Metadata

Assignee

• Select engineer(s) or no engineer required
• Select scientist(s) or no scientist required

Labels

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Projects and Milestone

• Select Repository and/or Organization level Project(s) or add alert: NEED PROJECT ASSIGNMENT label
• Select Milestone as the next official version or Future Versions