ext_easy impl + demo + fixes

HConfig

@@ -1,13 +1,15 @@
 grbc_want_version("1.0")
 grbc_ext("GRBC_EXT_pkg_config")
 grbc_ext("GRBC_EXT_profiles")
+grbc_ext("GRBC_EXT_easy")
 
 local grbc_extensions = grbc_library(LibraryConfig.new({
     name = "libgrbc_extensions",
     language_type = LanguageType.Cpp,
     files = {
         grbc_file("src/ext_pkg_config.cc"),
-        grbc_file("src/ext_profiles.cc")
+        grbc_file("src/ext_profiles.cc"),
+        grbc_file("src/ext_easy.cc")
     },
     lib_type = LibraryType.Static,
 
@@ -82,17 +84,10 @@ local grbc_exe = grbc_executable(ExecutableConfig.new({
         grbc_pkg("libgrbc"),
         grbc_pkg("libgrbc_extensions")
     },
-    compile_flags = {
-    },
+    compile_flags = {},
     linker_flags = {},
     include_dirs = {}
 }))
 
-grbc_task(TaskConfig.new({
-    name = "Clean build",
-    task_id = "clean",
-    shell_script = "ninja -t clean"
-}))
-
 -- Output the final build script
 grbc_build("ninja")