[Enhancement] Enhance highlighting of nested quotes in long strings.

[Peefy]

For the following code, the chars in the long string should have consistent highlight.

aaa = """
"a" 'a' "a"
"""
bbb = """ "a" """
ccc = ''' "a" 'a' '''

[cy00r]

Hey, can I work on this issue?

[cy00r]

@Peefy
Hey, can you please highlight/ping the code section where I have to make changes?

[He1pa]

@Peefy Hey, can you please highlight/ping the code section where I have to make changes?

@cy00r
sema/core/symbol, consider use a new symbol kind to represent long string,
sema/namer/node.rs and sema/advanced_resolver/node.rs to update symbol
you can ref other kind of symbol

[Gmin2]

@cy00r are yu still working on it ?

[cy00r]

@Gmin2 Yes I'm.

[cy00r]

Hey, @Gmin2 you can work on this.

[Gmin2]

Hey @Peefy, am really sorry at the moment i am out of my hometown for 2-3 week, thats why have removed my assignment so that other contributor can give it a try

[Peefy]

Closed by kcl-lang/vscode-kcl#52