fix binding generation for lists; add cli test (#46)

* fix binding generation for lists; add cli test

This also:
- moves the `examples/http/wit` directory to a shared location
- bumps the version to 0.7.1

Signed-off-by: Joel Dice <joel.dice@fermyon.com>

* update `sys.argv` at runtime; add matrix-math example

This ensures we get the runtime set of CLI args rather than the empty set
present during pre-init.

Signed-off-by: Joel Dice <joel.dice@fermyon.com>

* use `Once` to avoid redundant work in runtime; update example instructions

Signed-off-by: Joel Dice <joel.dice@fermyon.com>

---------

Signed-off-by: Joel Dice <joel.dice@fermyon.com>

Author: dicej

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "componentize-py"
-version = "0.7.0"
+version = "0.7.1"
 edition = "2021"
 exclude = ["cpython"]
 

Cargo.toml

@@ -0,0 +1,5 @@
+from command import exports
+
+class Run(exports.Run):
+    def run(self):
+        print("Hello, world!")

README.md

@@ -0,0 +1,23 @@
+# This app can either be used as a library (by calling `matrix-math#multiply`)
+# or a CLI command (by calling `wasi:cli/run#run`)
+
+import sys
+import numpy
+import matrix_math
+from matrix_math import exports
+from matrix_math.types import Err
+
+class MatrixMath(matrix_math.MatrixMath):
+    def multiply(self, a: list[list[float]], b: list[list[float]]) -> list[list[float]]:
+        print(f"matrix_multiply received arguments {a} and {b}")
+        return numpy.matmul(a, b).tolist()
+
+class Run(exports.Run):
+    def run(self):
+        args = sys.argv[1:]
+        if len(args) != 2:
+            print(f"usage: matrix-math <matrix> <matrix> (got {args})", file=sys.stderr)
+            exit(-1)
+
+        print(MatrixMath().multiply(eval(args[0]), eval(args[1])))
+