add issue templates for epics and releases (#1702)

* add issue templates for epics and releases

* remove text

Co-authored-by: Carlos Rodriguez <crodveg@gmail.com>

.github/ISSUE_TEMPLATE/epic-tracker.md

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+---
+name: Epic Tracker
+about: Create an issue to track feature epic progress
+
+---
+
+<!-- < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < ☺ 
+v                            ✰  Thanks for opening an issue! ✰    
+v    Before smashing the submit button please review the template.
+v    Word of caution: poorly thought-out proposals may be rejected 
+v                     without deliberation 
+☺ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >  -->
+
+## Requirements document
+
+<!-- Link to requirements document -->
+
+## IBC spec
+
+<!-- Link to specification -->
+
+## ADRs
+
+<!-- Links to ADRs related to this epic -->
+
+## Milestones
+
+<!-- Links to alpha, beta, RC milestones -->
+
+## Implementation issues
+
+<!-- Links to specific issues, thematically/logically grouped -->
+
+## QA scenarios
+
+<!-- Lists of manual QA tests that need be performed -->
+
+## Automated e2e tests
+
+<!-- List of automated e2e tests that need be added to CI -->
+
+## Pre-releases
+
+<!-- Links to alpha, beta, RC tags/releases -->
+
+## Checklist
+
+<!-- Remove any items that are not applicable. -->
+
+- [ ] Internal audit(s)
+- [ ] External audit(s)
+- [ ] Documentation
+- [ ] Swagger
+- [ ] Integration with relayers:
+  - [ ] Hermes
+  - [ ] Rly
+
+____
+
+#### For Admin Use
+
+- [ ] Not duplicate issue
+- [ ] Appropriate labels applied
+- [ ] Appropriate contributors tagged/assigned

.github/ISSUE_TEMPLATE/release-tracker.md

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+---
+name: Release tracker
+about: Create an issue to track release progress
+
+---
+
+<!-- < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < ☺ 
+v                            ✰  Thanks for opening an issue! ✰    
+v    Before smashing the submit button please review the template.
+v    Word of caution: poorly thought-out proposals may be rejected 
+v                     without deliberation 
+☺ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >  -->
+
+## Milestones
+
+<!-- Links to alpha, beta, RC or final milestones -->
+
+### IBC spec compatibility
+
+<!-- Version of the IBC spec that this release is compatible with -->
+
+### QA
+
+#### Backwards compatibility
+
+<!-- List of tests that need be performed with previous
+versions of ibc-go to guarantee that no regression is introduced -->
+
+- [ ] Fungible token transfers over a non-incentivised channel works with a counterparty chain running each previous major version.
+- [ ] Fungible token transfers over an incentivised channel works with a counterparty chain running each previous major version that supports ICS-29 Fee Middleware.
+- [ ] Interchain Accounts over a non-incentivised channel works with a counterparty chain running each previous major version that supports ICS-27 Interchain Accounts over non-incentivised channels.
+- [ ] Interchain Accounts over an incentivised channel works with a counterparty chain running each previous major version that supports ICS-27 Interchain Accounts over incentivised channels.
+
+### Migration 
+
+<!-- Link to migration document -->
+
+## Checklist
+
+<!-- Remove any items that are not applicable. -->
+
+- [ ] Bump [go package version](https://github.com/cosmos/ibc-go/blob/main/go.mod#L3).
+- [ ] Change all imports starting with `github.com/cosmos/ibc-go/v{x}` to ``github.com/cosmos/ibc-go/v{x+1}`.
+- [ ] Branch off main to create release branch in the form  of `release/vx.y.z.`.
+- [ ] Add branch protection rules to new release branch.
+- [ ] Add backport task to [`mergify.yml`](https://github.com/cosmos/ibc-go/blob/main/.github/mergify.yml)
+- [ ] Upgrade ibc-go version in [ibctest](https://github.com/strangelove-ventures/ibctest).
+- [ ] Check Swagger is up-to-date.
+
+## Post-release checklist
+
+- [ ] Update [`CHANGELOG.md`](https://github.com/cosmos/ibc-go/blob/main/CHANGELOG.md)
+- [ ] Update the table of supported release lines (and End of Life dates) in [`RELEASES.md`](https://github.com/cosmos/ibc-go/blob/main/RELEASES.md).
+- [ ] Update docs site:
+  - [ ] Add new release branch to [`docs/versions`](https://github.com/cosmos/ibc-go/blob/main/docs/versions) file.
+  - [ ] Add `label` and `key` to `versions` array in [`config.js`](https://github.com/cosmos/ibc-go/blob/main/docs/.vuepress/config.js#L33).
+- [ ] After changes to docs site are deployed, check [ibc.cosmos.network](https://ibc.cosmos.network) is updated.
+
+____
+
+#### For Admin Use
+
+- [ ] Not duplicate issue
+- [ ] Appropriate labels applied
+- [ ] Appropriate contributors tagged/assigned