MAJOR: Project rename and preparation for v1.0.0

I hope I haven't missed any for the renames!

lua/outline/symbols.lua

@@ -0,0 +1,74 @@
+local cfg = require 'outline.config'
+
+local M = {}
+
+M.kinds = {
+  [1] = 'File',
+  [2] = 'Module',
+  [3] = 'Namespace',
+  [4] = 'Package',
+  [5] = 'Class',
+  [6] = 'Method',
+  [7] = 'Property',
+  [8] = 'Field',
+  [9] = 'Constructor',
+  [10] = 'Enum',
+  [11] = 'Interface',
+  [12] = 'Function',
+  [13] = 'Variable',
+  [14] = 'Constant',
+  [15] = 'String',
+  [16] = 'Number',
+  [17] = 'Boolean',
+  [18] = 'Array',
+  [19] = 'Object',
+  [20] = 'Key',
+  [21] = 'Null',
+  [22] = 'EnumMember',
+  [23] = 'Struct',
+  [24] = 'Event',
+  [25] = 'Operator',
+  [26] = 'TypeParameter',
+  [27] = 'Component',
+  [28] = 'Fragment',
+
+  -- ccls
+  [252] = 'TypeAlias',
+  [253] = 'Parameter',
+  [254] = 'StaticMethod',
+  [255] = 'Macro',
+}
+
+---@param kind string|integer
+function M.icon_from_kind(kind)
+  local kindstr = kind
+  if type(kind) ~= 'string' then
+    kindstr = M.kinds[kind]
+  end
+  if not kindstr then
+    kindstr = 'Object'
+  end
+
+  if type(cfg.o.symbols.icon_fetcher) == 'function' then
+    local icon = cfg.o.symbols.icon_fetcher(kindstr)
+    if icon and icon ~= "" then
+      return icon
+    end
+  end
+
+  if cfg.o.symbols.icon_source == 'lspkind' then
+    local has_lspkind, lspkind = pcall(require, 'lspkind')
+    if not has_lspkind then
+      vim.notify("[outline]: icon_source set to lspkind but failed to require lspkind!", vim.log.levels.ERROR)
+    else
+      local icon = lspkind.symbolic(kindstr, { with_text = false })
+      if icon and icon ~= "" then
+        return icon
+      end
+    end
+  end
+
+  return cfg.o.symbols.icons[kindstr].icon
+end
+
+return M