Printing updates

[dsyme]

This updates signature printing to print in ways that are consistent with the F# style guide

• Spacing in printed and generated signatures doesn't follow F# style guide #12090

• Printing shows begin/end for modules unnecessarily #12089

• Types print as int [] not int[] #12088

• Literal values are shown twice in F# Interactive outputs #12091

• Show 'abstract' not 'abstract member' #12092

• Suppress with/end, class/end, interface/end, struct/end from displays when not needed #12093

• Signature printing doesn't escape all identifiers correctly #12094

• Format multi-line curried signatures according to the preferred style guide proposal https://github.com/dotnet/docs/issues/25917

• This part of Printing of type signatures has inaccuracies, especially from --sig:file.fsi #393 (comment)

• Another part of Printing of type signatures has inaccuracies, especially from --sig:file.fsi #393 (comment)

• Go to Metadata - fully qualified names for members mess up printing #11523 (see sample for System.Char generation)

• Go to Metadata - fields in structs issue #11524

FCS change:

• symbol.DisplayName will now include backticks when they are necessary to make the name a valid identifier. For example previously a symbol with logical name A-B would give ( A-B ) as the display name, which is not valid F# identifier text. Instead ``A-B`` will be returned by symbol.DisplayName.

Also cleanup:

• Rename some things internally TRecdRepr --> TFSharpRecdRepr etc. to make it clear they only apply to F#-declared things. This can help when reading code, and also as we increase interop with C# records etc.

Some tests to update but all routine.

• get it green

[dsyme]

@KevinRansom @TIHan @vzarytovskii This is ready

However we should first get #12047 in and then I'll integrate (it will take a bit of work)

[dsyme]

This needs one fix - the Declaration lists now contain ABC DEF entries, which is not what we want, e.g.

Before:

After:

[dsyme]

@TIHan This is ready (assuming it goes green)

[dsyme]

@TIHan ready! :)

[TIHan]

This is a large change right before imminent release, but the changes here are really just printing improvements and other minor refactorings. Looks good and excited to see how signature generation has improved :) , as well as tooltips.