allow setting shader directly from presetman

Author: HeliumAnt

Source/Renderer/raylib/rlgl.c

@@ -3906,7 +3906,7 @@ void rlClearActiveTextures() {
 }
 
 // Set shader currently active (id and locations)
-void rlSetShader(unsigned int id, int* locs) {
+void rlSetShader(unsigned int id, const int* locs) {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
 	if (RLGL.State.currentShaderId != id) {
 		rlDrawRenderBatch(RLGL.currentBatch);

Source/Renderer/raylib/rlgl.h

@@ -820,7 +820,7 @@ RLAPI void rlSetUniform(int locIndex, const void* value, int uniformType, int co
 RLAPI void rlSetUniformMatrix(int locIndex, RLMatrix mat); // Set shader value matrix
 RLAPI void rlSetUniformMatrices(int locIndex, const RLMatrix* mat, int count); // Set shader value matrices
 RLAPI void rlSetUniformSampler(int locIndex, unsigned int textureId); // Set shader value sampler
-RLAPI void rlSetShader(unsigned int id, int* locs); // Set shader currently active (id and locations)
+RLAPI void rlSetShader(unsigned int id, const int* locs); // Set shader currently active (id and locations)
 RLAPI unsigned int rlGetShaderCurrent();
 // Compute shader management
 RLAPI unsigned int rlLoadComputeShaderProgram(unsigned int shaderId); // Load compute shader program