Drop deprecated stylistic rules for style lint v15

[fregante]

https://stylelint.io/migration-guide/to-15/#deprecated-stylistic-rules

stylelint-config-xo produces:

 - The "at-rule-name-case" rule is deprecated.
 - The "at-rule-name-newline-after" rule is deprecated.
 - The "at-rule-semicolon-space-before" rule is deprecated.
 - The "at-rule-name-space-after" rule is deprecated.
 - The "at-rule-semicolon-newline-after" rule is deprecated.
 - The "block-closing-brace-empty-line-before" rule is deprecated.
 - The "block-closing-brace-newline-after" rule is deprecated.
 - The "block-closing-brace-newline-before" rule is deprecated.
 - The "block-opening-brace-newline-after" rule is deprecated.
 - The "block-opening-brace-space-before" rule is deprecated.
 - The "color-hex-case" rule is deprecated.
 - The "declaration-bang-space-after" rule is deprecated.
 - The "declaration-bang-space-before" rule is deprecated.
 - The "declaration-block-semicolon-newline-after" rule is deprecated.
 - The "declaration-block-semicolon-newline-before" rule is deprecated.
 - The "declaration-block-semicolon-space-after" rule is deprecated.
 - The "declaration-block-semicolon-space-before" rule is deprecated.
 - The "declaration-block-trailing-semicolon" rule is deprecated.
 - The "declaration-colon-newline-after" rule is deprecated.
 - The "declaration-colon-space-after" rule is deprecated.
 - The "declaration-colon-space-before" rule is deprecated.
 - The "function-comma-newline-after" rule is deprecated.
 - The "function-comma-newline-before" rule is deprecated.
 - The "function-comma-space-after" rule is deprecated.
 - The "function-max-empty-lines" rule is deprecated.
 - The "function-parentheses-newline-inside" rule is deprecated.
 - The "function-parentheses-space-inside" rule is deprecated.
 - The "function-whitespace-after" rule is deprecated.
 - The "linebreaks" rule is deprecated.
 - The "max-empty-lines" rule is deprecated.
 - The "media-feature-colon-space-after" rule is deprecated.
 - The "media-feature-colon-space-before" rule is deprecated.
 - The "media-feature-name-case" rule is deprecated.
 - The "media-feature-parentheses-space-inside" rule is deprecated.
 - The "media-feature-range-operator-space-after" rule is deprecated.
 - The "media-feature-range-operator-space-before" rule is deprecated.
 - The "media-query-list-comma-newline-after" rule is deprecated.
 - The "media-query-list-comma-newline-before" rule is deprecated.
 - The "media-query-list-comma-space-before" rule is deprecated.
 - The "no-empty-first-line" rule is deprecated.
 - The "no-eol-whitespace" rule is deprecated.
 - The "no-extra-semicolons" rule is deprecated.
 - The "no-missing-end-of-source-newline" rule is deprecated.
 - The "number-leading-zero" rule is deprecated.
 - The "number-no-trailing-zeros" rule is deprecated.
 - The "property-case" rule is deprecated.
 - The "selector-attribute-brackets-space-inside" rule is deprecated.
 - The "selector-attribute-operator-space-after" rule is deprecated.
 - The "selector-attribute-operator-space-before" rule is deprecated.
 - The "selector-combinator-space-after" rule is deprecated.
 - The "selector-combinator-space-before" rule is deprecated.
 - The "selector-descendant-combinator-no-non-space" rule is deprecated.
 - The "selector-list-comma-newline-after" rule is deprecated.
 - The "selector-list-comma-newline-before" rule is deprecated.
 - The "selector-list-comma-space-after" rule is deprecated.
 - The "selector-list-comma-space-before" rule is deprecated.
 - The "selector-max-empty-lines" rule is deprecated.
 - The "selector-pseudo-class-case" rule is deprecated.
 - The "selector-pseudo-class-parentheses-space-inside" rule is deprecated.
 - The "selector-pseudo-element-case" rule is deprecated.
 - The "string-quotes" rule is deprecated.
 - The "unicode-bom" rule is deprecated.
 - The "unit-case" rule is deprecated.
 - The "value-list-comma-newline-after" rule is deprecated.
 - The "value-list-comma-newline-before" rule is deprecated.
 - The "value-list-comma-space-after" rule is deprecated.
 - The "value-list-comma-space-before" rule is deprecated.
 - The "value-list-max-empty-lines" rule is deprecated.
 - The "indentation" rule is deprecated.

[yangmingshan]

Stylelint v16 removes all these deprecated stylistic rules, what should we do now? Remove these rules, or switch to https://github.com/stylelint-stylistic/stylelint-stylistic?

[yangmingshan]

If the decision is to switch to stylelint-stylistic, I think we will need a new stylelint-config-xo-prettier package, since stylelint-config-prettier has been archived.