feat: Add missing mod.ts files in std (#3509)

std/archive/tar.ts:
- Remove FileReader.
- Remove FileWriter.

std/encoding/csv.ts:
- ExtendedParseOptions -> ParseOptions
- HeaderOption -> HeaderOptions
- ParseOptions -> ReadOptions
- readAll() -> readMatrix()

std/encoding/yaml.ts:
- DumpOptions -> StringifyOptions

std/fmt/colors.ts:
- getEnabled() -> getColorEnabled()
- setEnabled() -> setColorEnabled()

std/testing/mod.ts:
- Re-export sibling modules.

1 files changed, 4 insertions, 0 deletions

diff --git a/std/io/mod.ts b/std/io/mod.ts
new file mode 100644
index 000000000..ca07bac43
--- /dev/null
+++ b/std/io/mod.ts
@@ -0,0 +1,4 @@
+export * from "./bufio.ts";
+export * from "./ioutil.ts";
+export * from "./readers.ts";
+export * from "./writers.ts";