chore: release v0.6.0

[AlexD10S]

• Update crate versions to 0.6.0.
• Update Changelog file. Run git cliff --bump, but fixed manually.
• Remove Deprecated flags or commands:
  - Remove the subcommands parachain and contract in pop build.
  - Old feature to run e2e tests..
  - OpenZeppelin template name changed.
  Note: In this release, a new deprecated flag has been introduced. The release flag is being deprecated in favor of profile (see source).
  Note 2: Parity templates will be addressed in feat: add new parachain template and remove outdated one from parity #297

[codecov]

Codecov Report

Attention: Patch coverage is 67.74194% with 10 lines in your changes missing coverage. Please review.

Project coverage is 75.15%. Comparing base (661c625) to head (eac11e4).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/pop-cli/src/commands/build/mod.rs	0.00%	4 Missing ⚠️
crates/pop-cli/src/commands/build/parachain.rs	80.00%	0 Missing and 4 partials ⚠️
crates/pop-cli/src/commands/build/contract.rs	66.66%	0 Missing and 2 partials ⚠️

@@            Coverage Diff             @@
##             main     #394      +/-   ##
==========================================
+ Coverage   75.10%   75.15%   +0.05%     
==========================================
  Files          62       62              
  Lines       13860    13820      -40     
  Branches    13860    13820      -40     
==========================================
- Hits        10409    10386      -23     
+ Misses       2094     2082      -12     
+ Partials     1357     1352       -5     

Files with missing lines	Coverage Δ
crates/pop-cli/src/commands/mod.rs	16.32% <ø> (+0.32%)	⬆️
crates/pop-cli/src/commands/test/contract.rs	0.00% <ø> (ø)
crates/pop-parachains/src/new_parachain.rs	79.80% <100.00%> (+2.23%)	⬆️
crates/pop-parachains/src/templates.rs	98.63% <ø> (-0.03%)	⬇️
crates/pop-cli/src/commands/build/contract.rs	53.84% <66.66%> (-7.27%)	⬇️
crates/pop-cli/src/commands/build/mod.rs	50.63% <0.00%> (+0.63%)	⬆️
crates/pop-cli/src/commands/build/parachain.rs	72.22% <80.00%> (-1.28%)	⬇️

... and 1 file with indirect coverage changes

[Daanvdplas]

Was only able to provide input for the removal of the BuildParachainCmd and BuildContractCmd as I was not involved with the other deprecations.

[Daanvdplas]

I think the two Build_Cmd types can be refactored a little bit more

[Daanvdplas]

Apart from some final nitpicks looking good!

Note: I am not so familar with the openzeppelin and e2e tests so this should be reviewed by someone who is

[AlexD10S]

Note: I am not so familar with the openzeppelin and e2e tests so this should be reviewed by someone who is

Thanks!
The tricky part was removing the deprecated code from the build. e2e tests and OZ old naming template is a very straightforward removal. Anyway, I’ve requested another review just to be sure.