feat(mdx-code): add code block meta parser support

[sabertazimi]

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issue #776

Pull Request

This PR Contains

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

Breaking Changes

Test-Case

I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

Additional Info

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Name	Status	Preview	Updated
blog	✅ Ready (Inspect)	Visit Preview	May 2, 2022 at 10:37PM (UTC)

[codecov]

Codecov Report

Merging #782 (a8586db) into main (dd20fbe) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #782   +/-   ##
=======================================
  Coverage   99.54%   99.54%           
=======================================
  Files         165      165           
  Lines         876      888   +12     
  Branches       68       77    +9     
=======================================
+ Hits          872      884   +12     
  Misses          4        4           

Impacted Files	Coverage Δ
components/CodeBlocks/Code.tsx	100.00% <100.00%> (ø)
components/CodeBlocks/Pre.tsx	100.00% <100.00%> (ø)

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[pull-request-quantifier-deprecated]

This PR has 127 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!

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Quantification details

Label      : Medium
Size       : +97 -30
Percentile : 45.4%

Total files changed: 11

Change summary by file extension:
.json : +4 -0
.tsx : +74 -30
.snap : +0 -0
.mdx : +17 -0
.ts : +2 -0
.lock : +0 -0

Change counts above are quantified counts, based on the PullRequestQuantifier customizations.

Why proper sizing of changes matters

Optimal pull request sizes drive a better predictable PR flow as they strike a
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How to interpret the change counts in git diff output

• One line was added: +1 -0
• One line was deleted: +0 -1
• One line was modified: +1 -1 (git diff doesn't know about modified, it will
  interpret that line like one addition plus one deletion)
• Change percentiles: Change characteristics (addition, deletion, modification)
  of this PR in relation to all other PRs within the repository.

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