Option to find and reuse existing strings in only Current Project, not in full solution

[deerchao]

It would increase performance for big solution, and usually I don't share strings across projects.

[justinswork]

Good idea! I can implement this along with some other performance improvements I made.

[SridharGNS]

@justinswork @deerchao is this issue still open?

[justinswork]

@justinswork @deerchao is this issue still open?

Yes, #746 is waiting for review from @tom-englert