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_ruby.lua

@@ -0,0 +1,73 @@
+-- mod-version:3
+local syntax = require "core.syntax"
+
+syntax.add {
+  name = "Ruby",
+  files = { "%.rb$", PATHSEP .. "%.gemspec$", PATHSEP .. "Gemfile$", PATHSEP .. "Gemfile%.lock$" },
+  headers = "^#!.*[ /]ruby",
+  comment = "#",
+  patterns = {
+    { pattern = { '"', '"', '\\' },     type = "string"   },
+    { pattern = { "'", "'", '\\' },     type = "string"   },
+    { pattern = "-?0x%x+",              type = "number"   },
+    { pattern = "%#.-\n",               type = "comment"  },
+    { pattern = "-?%d+[%d%.eE]*f?",     type = "number"   },
+    { pattern = "-?%.?%d+f?",           type = "number"   },
+    { pattern = "[%+%-=/%*%^%%<>!~|&]", type = "operator" },
+    { pattern = "[%a_][%w_]*%f[(]",     type = "function" },
+    { pattern = "@?@[%a_][%w_]*",       type = "keyword2" },
+    { pattern = "::[%w_]*",             type = "symbol" },
+    { pattern = ":[%w_]*",              type = "keyword2" },
+    { pattern = "[%a_][%w_]*:[^:]",     type = "keyword2" },
+    { pattern = "[%a_][%w_]*",          type = "symbol"   },
+  },
+  symbols = {
+    ["nil"]  = "literal",
+    ["true"]  = "literal",
+    ["false"]  = "literal",
+    ["private"]  = "keyword",
+    ["extend"]  = "keyword",
+    ["include"]  = "keyword",
+    ["require"]  = "keyword",
+    ["require_dependency"]  = "keyword",
+    ["__ENCODING__"] = "keyword",
+    ["__LINE__"] = "keyword",
+    ["__FILE__"] = "keyword",
+    ["BEGIN"] = "keyword",
+    ["END"] = "keyword",
+    ["alias"] = "keyword",
+    ["and"] = "keyword",
+    ["begin"] = "keyword",
+    ["break"] = "keyword",
+    ["case"] = "keyword",
+    ["class"] = "keyword",
+    ["def"] = "keyword",
+    ["defined?"] = "keyword",
+    ["do"] = "keyword",
+    ["else"] = "keyword",
+    ["elsif"] = "keyword",
+    ["end"] = "keyword",
+    ["ensure"] = "keyword",
+    ["for"] = "keyword",
+    ["if"] = "keyword",
+    ["in"] = "keyword",
+    ["module"] = "keyword",
+    ["next"] = "keyword",
+    ["not"] = "keyword",
+    ["or"] = "keyword",
+    ["redo"] = "keyword",
+    ["rescue"] = "keyword",
+    ["retry"] = "keyword",
+    ["return"] = "keyword",
+    ["self"] = "keyword",
+    ["super"] = "keyword",
+    ["then"] = "keyword",
+    ["undef"] = "keyword",
+    ["unless"] = "keyword",
+    ["until"] = "keyword",
+    ["when"] = "keyword",
+    ["while"] = "keyword",
+    ["yield"] = "keyword"
+  },
+}
+