Standardize build process and staging for python

[vidyalakshmir]

This is a child issue of #124 .

We are standardizing the build pipeline and artifact staging for python. To close this issue, please complete the following checklist:

• 1. Makefile Target: Ensure the main Makefile has a dedicated make python target that successfully triggers the entire build pipeline for this app.
• 2. Artifact Staging: Configure the build to output all final artifacts (binaries, config files, logs) into lind-wasm-apps/build/python/, preserving the original folder structure.
• 3. Wasm Binary Naming: Copy the final compiled .cwasm binary and strip the extension completely from the final executable in the staging folder. If .cwasm binary is not produced, the build should exit with an error.

Refer to #124 for more details.