ptig enhancements/ todo

[clach04]

#19

1. ☑️ in-progress ls - non-recursive directory browse / browsing #67 and ptweb - web interface #36 directory browse
2. Prompt change when search encrypted enabled ptig more control over prompt - prompt template support #86
3. ✅ Search only encrypted option for grep - ptgrep tasks/TODO #19 number 6
   • ptgrep / ptig encrypted ONLY search support #84
4. ✔️ Caching find option, scan directory once and the in memory find for filenames instead of always hitting filesystem. Option to always hit filesystem also needed - ptig - cache / caching find/search option #66
5. ✔️ Add option to search the last result set (both titles and content). E.g. results find TERM, results rg TERM - ptig - Add option to search the last result set (both titles and content). E.g. results find TERM, results rg TERM #65
6. ✔️ Open directory using native file explorer / browser (e.g. from results) ptig Open directory using native file explorer / browser  #61
7. tests new test - add tests for ptig #60
8. ✔️ bookmarks support ptig bookmarks support #68
9. find -i -r options (reuse grep parser?)
10. rg/grep -y should include encrypted files by default? (see 3 above -k implemented)
11. run commands ptig - option to allow simple script/binary running #87 - NOTE cmd2 has this builtin with no code changes required
12. ptig autocomplete / auto complete / omin completion support #107
13. vim style quit? :q, :q!, :qa. - see help update 3ec7bcf. ptpyvim usability issues #46