Append crate to ELF file while deploying program

[pgarg66]

Problem

The on-chain program cannot be decompiled into a crate file. So cargo-registry server cannot be used for fetching the crate.

Summary of Changes

This is a temporary solution.

• Append the crate to ELF file (fixup the toml files and directory name in the package)
• On cargo fetch, retrieve the program, and return the appended crate from it.

Fixes #

[codecov]

Codecov Report

Merging #33849 (333f878) into master (9ffbe2a) will decrease coverage by 0.1%.
Report is 3 commits behind head on master.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #33849     +/-   ##
=========================================
- Coverage    81.9%    81.8%   -0.1%     
=========================================
  Files         809      809             
  Lines      217717   217717             
=========================================
- Hits       178345   178278     -67     
- Misses      39372    39439     +67