Scalar & WAsm GEMM/IGEMM/DWCONV micro-kernels without activation

- Extended micro-kernel generators
- Update test generators
- Added test specifications

PiperOrigin-RevId: 305659311
diff --git a/test/f32-igemm.yaml b/test/f32-igemm.yaml
new file mode 100644
index 0000000..775a4f9
--- /dev/null
+++ b/test/f32-igemm.yaml
@@ -0,0 +1,20 @@
+# Copyright 2020 Google LLC
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+- name: xnn_f32_igemm_ukernel_1x4__wasm
+  k-block: 1
+- name: xnn_f32_igemm_ukernel_2x4__wasm
+  k-block: 1
+- name: xnn_f32_igemm_ukernel_4x4__wasm
+  k-block: 1
+- name: xnn_f32_igemm_ukernel_4x2__wasm
+  k-block: 1
+- name: xnn_f32_igemm_ukernel_1x4__scalar
+  k-block: 1
+- name: xnn_f32_igemm_ukernel_2x4__scalar
+  k-block: 1
+- name: xnn_f32_igemm_ukernel_4x4__scalar
+  k-block: 1
+- name: xnn_f32_igemm_ukernel_4x2__scalar
+  k-block: 1