Add missing language-injection comments

Author: TBlueF

common/webapp/src/js/map/lowres/LowresVertexShader.js

@@ -24,6 +24,7 @@
  */
 import { ShaderChunk } from 'three';
 
+// language=GLSL
 export const LOWRES_VERTEX_SHADER = `
 #include <common>
 ${ShaderChunk.logdepthbuf_pars_vertex}

common/webapp/src/js/skybox/SkyFragmentShader.js

@@ -22,6 +22,8 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
+// language=GLSL
 export const SKY_FRAGMENT_SHADER = `
 uniform float sunlightStrength;
 uniform float ambientLight;

common/webapp/src/js/skybox/SkyVertexShader.js

@@ -22,6 +22,8 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
+// language=GLSL
 export const SKY_VERTEX_SHADER = `
 varying vec3 vPosition;
 void main() {