Apply consistent use of 'e.g.' and 'i.e.'

[hsnabszhdn]

eg, e.g, e.g:, eg: are randomly all over the place. This PR is to make their usage consistent following these rules:

1. Grammatically speaking, it's e.g. and i.e. and all other variant are incorrect. References:
   • Longman
   • Merriam-Webster
   • Oxford Learner's Dictionairies
2. Controversial (up for discussion): There should be a comma after e.g. and i.e., but having 3 punctuation marks in a 2-letter word looks so weird: e.g., or i.e., especially when they come in parentheses which is yet another punctuation: (e.g., SENTENCE) or (i.e., SENTENCE)
   • I went out on a limb here and made everything look like: (e.g. SENTENCE) and (i.e. SENTENCE) (There was already some usage of this pattern in the repo, so it's not just made-up in this PR, and rather making all the same)
3. Controversial (up for discussion): When outside parentheses and at the start of an actual paragraph/sentence, e.g. and i.e. suggest laziness for typing the actual words For example and That is rather than conciseness.
   • Therefore, you'll see e.g. in this PR getting replaced by For example when coming at the beginning of a paragraph/sentence.

[hsnabszhdn]

@microsoft-github-policy-service agree

[Dawnmarie-2578]

https://www.reddit.com/u/LastStudent8097/s/rsiQw4Yqo9