vlib/examples: fix gl/glfw/gg examples. rename init functions

examples/hot_reload/bounce.v

@@ -22,7 +22,7 @@ mut:
 }
 
 fn main() {
-	glfw.init()
+	glfw.init_glfw()
 	width := 600
 	height := 300
 	mut game := &Game{
@@ -43,7 +43,7 @@ fn main() {
 	//window.onkeydown(key_down)
 	game.main_wnd = window 
 	window.make_context_current()
-	gg.init() 
+	gg.init_gg() 
 	game.gg = gg.new_context(gg.Cfg {
 		width: width
 		height: height

examples/hot_reload/graph.v

@@ -18,7 +18,7 @@ struct Context {
 
 fn main() {
 	os.clear()
-	glfw.init()
+	glfw.init_glfw()
 	ctx:= &Context{ 
 		gg: gg.new_context(gg.Cfg {
 			width: Size 

examples/tetris/tetris.v

@@ -124,7 +124,7 @@ struct Game {
 }
 
 fn main() {
-	glfw.init()
+	glfw.init_glfw()
 	mut game := &Game{
 		gg: gg.new_context(gg.Cfg {
 			width: WinWidth

vlib/gg/gg.v

@@ -25,8 +25,8 @@ pub fn vec2(x, y int) Vec2 {
 	return res
 }
 
-pub fn init() {
-	glfw.init()
+pub fn init_gg() {
+	glfw.init_glfw()
 	println(gl.TEXT_VERT)
 	gl.init_glad()
 }
@@ -78,7 +78,7 @@ pub fn new_context(cfg Cfg) &GG {
 			always_on_top: cfg.always_on_top
 		})
 		window.make_context_current()
-		init()
+		init_gg()
 	}
 	shader := gl.new_shader('simple')
 	shader.use()

vlib/glfw/glfw.v

@@ -86,7 +86,7 @@ pub:
 // type clickpub fn pub fn (window * GLFWwindow, button, action, mods int)
 type clickpubfn fn (window voidptr, button, action, mods int)
 
-pub fn init() {
+pub fn init_glfw() {
 	C.glfwInit()
 	C.glfwWindowHint(C.GLFW_CONTEXT_VERSION_MAJOR, 3)
 	C.glfwWindowHint(C.GLFW_CONTEXT_VERSION_MINOR, 3)