feat(lsp): add LspInlayHint highlight

Author: mehalter

lua/astrotheme/groups/lsp.lua

@@ -18,6 +18,7 @@ local function callback()
     LspDiagnosticsFloatingWarn = { fg = C.dark_orange },
     LspFloatWinBorder = { fg = C.overlay0 },
     LspFloatWinNormal = { fg = C.text, bg = C.crust },
+    LspInlayHint = { link = "Comment" },
     LspReferenceRead = { fg = C.none, bg = C.surface1 },
     LspReferenceText = { fg = C.none, bg = C.surface1 },
     LspReferenceWrite = { fg = C.none, bg = C.surface1 },