Add @keyword.import highlighting group

This commit introduces a new highlighting group, `@keyword.import`,
to provide consistent highlighting for the "import" keyword across
different file types.

lua/darkplus/theme.lua

@@ -155,6 +155,7 @@ theme.set_highlights = function()
   hl(0, "@keyword.repeat", { link = 'Include' })
   hl(0, "@keyword.coroutine", { link = 'Include' })
   hl(0, "@keyword.conditional", { link = 'Conditional' })
+  hl(0, "@keyword.import", { link = 'Include' })
   hl(0, "@conditional", { link = 'Conditional' })
   hl(0, "@repeat", { link = 'Repeat' })
   hl(0, "@debug", { link = 'Debug' })
@@ -471,7 +472,6 @@ theme.set_highlights = function()
   hl(0, "@lsp.type.interface.typescriptreact", { fg = c.cyan, bg = 'NONE' })
   hl(0, "@lsp.type.namespace.typescriptreact", { fg = c.cyan, bg = 'NONE' })
   hl(0, "@lsp.typemod.variable.readonly.typescriptreact", { fg = c.blue_3, bg = 'NONE' })
-  hl(0, "@keyword.import.tsx", { fg = c.purple, bg = 'NONE' })
   hl(0, "@tag.builtin.tsx", { link = 'Tag' })
 
 
@@ -483,9 +483,6 @@ theme.set_highlights = function()
   hl(0, "@tag.tsx", { fg = c.cyan, bg = 'NONE' })
   hl(0, "@tag.jsx", { fg = c.cyan, bg = 'NONE' })
 
-  -- Javascript
-  hl(0, "@keyword.import.javascript", { fg = c.purple, bg = 'NONE' })
-
   -- CSS
   hl(0, "@string.special.css", { fg = c.dark_yellow, bg = 'NONE' })
   hl(0, "@type.definition.css", { fg = c.blue_2, bg = 'NONE' })