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_umka.lua

@@ -0,0 +1,67 @@
+-- mod-version:3
+local syntax = require 'core.syntax'
+
+syntax.add {
+	name = "Umka",
+	files = { "%.um$" },
+	comment = "//",
+	block_comment = { "/*", "*/" },
+	patterns = {
+		{ pattern = "//.-\n",                          type = "comment"  },
+		{ pattern = { "/%*", "%*/" },                  type = "comment"  },
+		{ pattern = "0x%x+",                           type = "number"   },
+		{ pattern = "%d+%.?%d*[Ee]%-?%d+",             type = "number"   },
+		{ pattern = "%d+%.?%d*",                       type = "number"   },
+		{ pattern = {'"', '"', '\\'},                  type = "string"   },
+		{ pattern = {"'", "'", '\\'},                  type = "string"   },
+
+		{ pattern = ":=",                              type = "operator" },
+		{ pattern = "%.%.",                            type = "operator" },
+		{ pattern = "[%^%+%-%*/%%&|~<>!=]",            type = "operator" },
+		{ pattern = "[%a_][%w_]*()%*?()%s*%f[%(]",     type = {"function", "operator", "normal"} },
+		{ pattern = "%u[%w_]*",                        type = "literal"  },
+		{ pattern = "[%a_][%w_]*",                     type = "symbol"   },
+	},
+	symbols = {
+		["break"]     = "keyword",
+		["case"]      = "keyword",
+		["const"]     = "keyword",
+		["continue"]  = "keyword",
+		["default"]   = "keyword",
+		["else"]      = "keyword",
+		["for"]       = "keyword",
+		["fn"]        = "keyword",
+		["import"]    = "keyword",
+		["interface"] = "keyword",
+		["if"]        = "keyword",
+		["in"]        = "keyword",
+		["map"]       = "keyword",
+		["return"]    = "keyword",
+		["str"]       = "keyword",
+		["struct"]    = "keyword",
+		["switch"]    = "keyword",
+		["type"]      = "keyword",
+		["var"]       = "keyword",
+		["weak"]      = "keyword",
+
+		-- types
+		["void"]   = "keyword2",
+		["int8"]   = "keyword2",
+		["int16"]  = "keyword2",
+		["int32"]  = "keyword2",
+		["int"]    = "keyword2",
+		["uint8"]  = "keyword2",
+		["uint16"] = "keyword2",
+		["uint32"] = "keyword2",
+		["uint"]   = "keyword2",
+		["real32"] = "keyword2",
+		["real"]   = "keyword2",
+		["bool"]   = "keyword2",
+		["true"]   = "literal",
+		["false"]  = "literal",
+		["char"]   = "keyword2",
+		["fiber"]  = "keyword2",
+		["any"]    = "keyword2",
+		["null"]   = "literal",
+	},
+}