238 fix interpolation of multi variables

[arturminchukov]

Related issue: #238
Interpolated:

1. Field Value Variables:
   • field:$var -> field:in("v1", ..., "vN")
   • field:=$var -> field:in("v1", ..., "vN")
   • Values are quoted and escaped via JSON.stringify()
   • "All" values expand to in(*)
2. Function Contexts:
   • in($var) and contains_any($var) expand to quoted lists
   • Values maintain proper quoting within function calls
3. Nequality Operators in stream filters:
   • field:!$var -> !field in("v1", ..., "vN")
   • field:!=$var -> !field in("v1", ..., "vN")
4. Stream Filters:
   • {tag=$var} -> {tag in(...)}
   • {field!=$var} -> {tag not_in(...)}
5. Restrictions:
   • Interpolation is NOT allowed in regexp (e.g., field:~$var)
   • Invalid usage will show an error message

Added these rules to the tooltip near the query input:

[arturminchukov]

/build

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## 🚀 Build Started

**PR:** #412
**Source:** Branch (`238-incorrect-interpolation-of-multi-value-variable-in-regex`)
**Triggered by:** @arturminchukov

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Version: v0.21.0-pr412-20251010-073021-5133371
PR: #412
Source: Branch (238-incorrect-interpolation-of-multi-value-variable-in-regex)
Commit: 5133371c79909f9d01b2cf26e29c45f1c0d81fb1
Triggered by: @arturminchukov

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[Loori-R]

LGTM! Left a couple of minor style suggestions.
Also, I might have missed it, but please double-check that quotes are properly escaped - for example, the value ["10.71.31.18"] should be inserted as "[\"10.71.31.18\"]".

[dmitryk-dk]

Overall looks good! Remove console please

[dmitryk-dk]

LGTM!

[hagen1778]

Suggested change

	* BUGFIX: fix interpolation of multi-value query variables by mapping `filerName:$filterVar` and `filerName:$filterVar` to the `filerName:in("v1", ..., "vN")`, also supports negative operators and stream tags(`{tag = $var}` to `{tag in($var)}`). Disallow interpolation in regexp with variables (e.g., `field:~$var`). See [#238](https://github.com/VictoriaMetrics/victorialogs-datasource/issues/238).
	* BUGFIX: fix interpolation of multi-value query variables by mapping `filterName:$filterVar` and `filterName:=$filterVar` to the `filerName:in("v1", ..., "vN")`. Support negative operators and stream tags(`{tag = $var}` to `{tag in($var)}`). Disallow interpolation in regexp with variables (e.g., `field:~$var`). See [#238](https://github.com/VictoriaMetrics/victorialogs-datasource/issues/238).