feat: support explicit lazy=false (#122)

lua/lz/n/handler/init.lua

@@ -93,13 +93,16 @@ end
 ---@return boolean
 local function is_lazy(spec)
     ---@diagnostic disable-next-line: undefined-field
-    return spec.lazy
-        or vim.iter(handlers):any(function(spec_field, _)
-            -- PERF: This should be simpler and more performant than
-            -- filtering out "lazy" spec fields. However, this also
-            -- assumes that 'false' means a handler is disabled.
-            return spec[spec_field] and spec[spec_field] ~= nil
-        end)
+    if spec.lazy ~= nil then
+        ---@diagnostic disable-next-line: undefined-field
+        return spec.lazy
+    end
+    return vim.iter(handlers):any(function(spec_field, _)
+        -- PERF: This should be simpler and more performant than
+        -- filtering out "lazy" spec fields. However, this also
+        -- assumes that 'false' means a handler is disabled.
+        return spec[spec_field] and spec[spec_field] ~= nil
+    end)
 end
 
 ---Mutates the `plugin`.

spec/lz_n_spec.lua

@@ -96,5 +96,21 @@ describe("lz.n", function()
                 cmd = { "Single" },
             })
         end)
+        it("eagerly load if lazy=False", function()
+            local spy_load = spy.on(loader, "_load")
+            lz.load({
+                {
+                    "single.nvim",
+                    cmd = "Single",
+                    lazy = false,
+                },
+            })
+            assert.spy(spy_load).called(1)
+            assert.spy(spy_load).called_with({
+                name = "single.nvim",
+                cmd = { "Single" },
+                lazy = false,
+            })
+        end)
     end)
 end)