Develop new "Flag Sites" tab

[cristinamullin]

Is your feature request related to a problem? Please describe.

Create new tab for flagging sites with QAQC issues and for displaying and flagging nearby sites using the TADA_FindNearbySites() and TADA_FlagCoordinates() functions.

Allow users to select each nearby site pair and display the pair on a map. Include button for user to select if they want to treat the sites separately instead of as a pair (default is to treat them as a pair). Include option to select distance for pairings. Include option for users to rename TADA_MonitoringLocationID if desired.

This page should also allow users to review and remove sites that are flagged by [TADA_FlagCoordinates()] (https://usepa.github.io/TADA/reference/TADA_FlagCoordinates.html) as imprecise and/or out of the US. This functionality already exists on the "Flag" tab but does not include a map and users must decide to flag all or none for removal with the current implementation which is not ideal. In the new "Site Flag" page, these site related issues (imprecise or out of the US) should be highlighted on the map in some way to assist users with their review. Users should be able to be remove flagged sites individually OR in bulk.

See mock ups for ideas (these are a bit outdated):

• pages 4-6: https://usepa.sharepoint.com/sites/WQPDataAssessmentTeam/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FWQPDataAssessmentTeam%2FShared%20Documents%2FGeneral%2FTADA%20Dev%2FRShiny%2FTADA%20Module%201%20Mockups%2002252022%2Epdf&viewid=deb12f0b%2D3d2c%2D4694%2Dbe22%2D7d262f785cce&parent=%2Fsites%2FWQPDataAssessmentTeam%2FShared%20Documents%2FGeneral%2FTADA%20Dev%2FRShiny
• slide 5: https://usepa.sharepoint.com/:p:/r/sites/WQPDataAssessmentTeam/_layouts/15/Doc.aspx?sourcedoc=%7BD09286FA-0BB1-452B-9920-913CE3C9D772%7D&file=Tool%201%20Mock%20Ups.pptx&action=edit&mobileredirect=true