feat(keeper)!: use <pkgpath>.<expr> syntax for qeval; <pkgpath>:<path> for qrender

[thehowl]

This is a switch that was discussed with @leohhhn and @moul. It switches the current syntax for qeval, which requires a newline as a separator, to use a dot . instead (ie. gno.land/r/demo/users.MyFunction(123)). For qrender, this is switched to a colon :, like the gnoweb render: gno.land/r/demo/users:u/morgan.

BREAKING CHANGE: current qeval and qrender calls using the RPC endpoints will have to be changed. No changes are required for gnoclient users.

Contributors' checklist...

• Added new tests, or not needed, or not feasible
• Provided an example (e.g. screenshot) to aid review or the PR is self-explanatory
• Updated the official documentation or not needed
• No breaking changes were made, or a BREAKING CHANGE: xxx message was included in the description
• Added references to related issues and PRs
• Provided any useful hints for running manual tests
• Added new benchmarks to generated graphs, if any. More info here.

[leohhhn]

Related: #2349

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 7 lines in your changes missing coverage. Please review.

Project coverage is 54.64%. Comparing base (7b8a893) to head (73772ba).
Report is 9 commits behind head on master.

Files	Patch %	Lines
gno.land/pkg/sdk/vm/handler.go	64.70%	6 Missing ⚠️
gno.land/pkg/gnoclient/client_queries.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2382      +/-   ##
==========================================
+ Coverage   54.63%   54.64%   +0.01%     
==========================================
  Files         582      582              
  Lines       78401    78402       +1     
==========================================
+ Hits        42832    42843      +11     
+ Misses      32359    32349      -10     
  Partials     3210     3210              

Flag	Coverage Δ
gno.land	62.22% <66.66%> (+0.24%)	⬆️

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[leohhhn]

Codecov? :c