Add some array declaration tests

tests/array-01.glsl

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+#version 120
+/* FAIL - array size type must be int */
+uniform vec4 [3.2] a;

tests/array-02.glsl

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+#version 120
+/* FAIL - array size type must be scalar */
+uniform vec4 [ivec4(3)] a;

tests/array-03.glsl

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+#version 120
+/* PASS */
+uniform vec4 [3] a;

tests/array-04.glsl

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+/* FAIL - array size type must be int */
+uniform vec4 a[3.2];

tests/array-05.glsl

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+/* FAIL - array size type must be scalar */
+uniform vec4 a[ivec4(3)];

tests/array-06.glsl

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+/* PASS */
+uniform vec4 a[3];

tests/array-07.glsl

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+/* FAIL - array size must be > 0 */
+uniform vec4 a[0];

tests/array-08.glsl

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+/* FAIL - array size must be > 0 */
+uniform vec4 a[-1];