feat(tree-sitter): Add XML support

[RenjiSann]

• Added an entry to CHANGELOG.md if this change could be valuable to users
  This PR brings supports for XML syntax highlighting, referring to Syntax highlighting support for various languages (tree-sitter grammars list) #272

[codecov-commenter]

Codecov Report

Merging #1554 (3c5d8d0) into master (ea9249f) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@          Coverage Diff           @@
##           master   #1554   +/-   ##
======================================
  Coverage    6.85%   6.86%           
======================================
  Files         125     125           
  Lines       51842   51788   -54     
======================================
  Hits         3553    3553           
+ Misses      48289   48235   -54     

Impacted Files	Coverage Δ
lapce-core/src/language.rs	45.16% <ø> (ø)
lapce-core/src/syntax/highlight.rs	0.00% <0.00%> (ø)
lapce-ui/src/app.rs	0.00% <0.00%> (ø)
lapce-data/src/proxy.rs	0.00% <0.00%> (ø)
lapce-data/src/update.rs	0.00% <0.00%> (ø)
lapce-proxy/src/plugin/lsp.rs	0.00% <0.00%> (ø)

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