PSV - Pipe Separated Value format (markdown table style!)

Why not use the same parsing logic used for parsing github style tables as an alternative to CSV file format?

It means you can use comma! Plus such file format can clearly and unambiguously tell you if it has a header cell or not. We could also extend this to make it more suitable for more complex sheets. But only as long as it keeps to the markdown ethos of easy human readability.

Could be baked into most apps as an alternative to CSV.

e.g.

```

# What is this?
no pipes here means it is just comments. Every row needs to start with a "pipe" to be recognized as a start of a table row. A header row is indicated by a sequence of "|--|" just under the header row.

## Sheet Name 1
| Tables- | Are______ | Cool |
|----------|:-------------:|------:|
| col 1 is | leftaligned | $1600 |
| col 2 is | centered__ | $12 |
| col 3 is | right-aligned | $1 |

## Sheet Name 2
optional comments
| Tables- | Are______ | Cool |
|----------|:-------------:|------:|
| col 1 is | leftaligned | $1600 |
| col 2 is | centered__ | $12 |
| col 3 is | right-aligned | $1 |

```

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But yea, if we really do think this is a good idea. We really should create a standardization organization to avoid the diverging implementation that affects CSV. (Along with good instructions of implementing parsers. Like how json was able to explain how it works succinctly)

Bonus: Could we somehow also include formula support? e.g. `=SUM(A5:B7)` without clashing with normal strings and numbers? Maybe `| "43"="SUM(A5:B7)" |` to show calculated value and the formula that was used?