Bundle curated community plugins (2.1.8-4)

Vendored from upstream, pinned by commit (see debian/extra/README.source):
- gitstatus, gitopen, fontconfig, open_ext, select_colorscheme,
  smoothcaret, nerdicons (font mapping patched to DATADIR, Ships the
  Symbols Nerd Font Mono TTF, SIL OFL 1.1)
- lite-xl-lsp (complete LSP client; idle until a language server is
  configured) plus the lite-xl-widgets library it requires
- 104 language syntax plugins (none duplicate the nine bundled in core)

settings GUI left out upstream is broken: it requires a
libraries.widget.fonts widget that does not exist in
lite-xl-widgets at any revision.

Co-developed-with: ZCode (Z.ai)

debian/extra/plugins/language_scala.lua

@@ -0,0 +1,80 @@
+-- mod-version:3
+local syntax = require "core.syntax"
+
+syntax.add {
+  name = "Scala",
+  files = { "%.sc$", "%.scala$" },
+  comment = "//",
+  patterns = {
+    { pattern = "//.-\n",                      type = "comment"  },
+    { pattern = { "/%*", "%*/" },              type = "comment"  },
+    { pattern = { '[ruU]?"', '"', '\\' },      type = "string"   },
+    { pattern = { "[ruU]?'", "'", '\\' },      type = "string"   },
+    { pattern = "0x[%da-fA-F]+",               type = "number"   },
+    { pattern = "-?%d+[%d%.eE]*",              type = "number"   },
+    { pattern = "-?%.?%d+",                    type = "number"   },
+    { pattern = "[%+%-=/%*%^%%<>!~|&]",        type = "operator" },
+    { pattern = '[%a_][%w_]*"""*[%a_][%w_]*"""', type = "string"   },
+    { pattern = "[%a_][%w_]*%f[(]",              type = "function" },
+    { pattern = "[%a_][%w_]*",                   type = "symbol"   },
+  },
+  symbols = {
+    ["abstract"] = "keyword",
+    ["case"]     = "keyword",
+    ["catch"]    = "keyword",
+    ["class"]    = "keyword",
+    ["finally"]  = "keyword",
+    ["final"]    = "keyword",
+    ["do"]       = "keyword",
+    ["extends"]  = "keyword",
+    ["forSome"]  = "keyword",
+    ["implicit"] = "keyword",
+    ["lazy"]     = "keyword",
+    ["match"]    = "keyword",
+    ["new"]      = "keyword",
+    ["override"] = "keyword",
+    ["package"]  = "keyword",
+    ["throw"]    = "keyword",
+    ["trait"]    = "keyword",
+    ["type"]     = "keyword",
+    ["var"]      = "keyword",
+    ["val"]      = "keyword",
+    ["println"]  = "keyword",
+    ["return"]   = "keyword",
+    ["for"]      = "keyword",
+    ["Try"]      = "keyword",
+    ["def"]      = "keyword",
+    ["while"]    = "keyword",
+    ["with"]     = "keyword",
+    ["if"]       = "keyword",
+    ["else"]     = "keyword",
+    ["import"]   = "keyword",
+    ["object"]   = "keyword",
+    ["yield"]    = "keyword",
+
+    ["private"]   = "keyword2",
+    ["protected"] = "keyword2",
+    ["sealed"]    = "keyword2",
+    ["super"]     = "keyword2",
+    ["this"]      = "keyword2",
+    ["Byte"]      = "keyword2",
+    ["Short"]     = "keyword2",
+    ["Int"]       = "keyword2",
+    ["Long"]      = "keyword2",
+    ["Float"]     = "keyword2",
+    ["Double"]    = "keyword2",
+    ["Char"]      = "keyword2",
+    ["String"]    = "keyword2",
+    ["List"]      = "keyword2",
+    ["Array"]     = "keyword2",
+    ["Boolean"]   = "keyword2",
+
+    ["Null"]     = "literal",
+    ["Any"]      = "literal",
+    ["AnyRef"]   = "literal",
+    ["Nothing"]  = "literal",
+    ["Unit"]     = "literal",
+    ["true"]     = "literal",
+    ["false"]    = "literal",
+  }
+}