fix: project routes and permissions in portal

[GursheenK]

Problem

• Projects link in the sidebar of the Web Portal routes incorrectly.
• Opening the Project list throws a Permission Error.
• Projects for all Customers are shown irrespective of the current user.

Solution

• Added the has_website_permission for Project Doctype in hooks.py.
• Made the Sidebar Item Projects specific for Customer Role users.
• Added logic to filter projects for which the current user has access while generating the Project list.

Example
Create a Customer.
Create a Website User and add the User to the Customer's Portal Users table.
Create a Project with the above Customer.
Add the above Website User in the list of Project Users in the Project.
Login using the user to view the project details.

Screenshots

Closes #34706

[stale]

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[codecov]

Codecov Report

Merging #36218 (6a7b45f) into develop (ce81ffd) will decrease coverage by 0.46%.
Report is 18 commits behind head on develop.
The diff coverage is 13.33%.

❗ Current head 6a7b45f differs from pull request most recent head 5c48074. Consider uploading reports for the commit 5c48074 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #36218      +/-   ##
===========================================
- Coverage    65.27%   64.81%   -0.46%     
===========================================
  Files          794      792       -2     
  Lines        62105    61829     -276     
===========================================
- Hits         40536    40076     -460     
- Misses       21569    21753     +184     

Files Changed	Coverage Δ
erpnext/hooks.py	100.00% <ø> (ø)
erpnext/projects/doctype/project/project.py	50.15% <13.33%> (-1.31%)	⬇️

... and 36 files with indirect coverage changes

[jsbrain]

This is still not working on latest v14 tags ... When adding a user to Projects > Users table nothing happens and the user still has not access to the project.